x-radiation

listen to the pronunciation of x-radiation
İngilizce - Türkçe
X ışını radyasyonu

İlgili Terimler

radiation
{i} ışıma
radiation
ışınım
radiation
radyasyon

Dün, kardeşim sakinlere yardım etmek için Fukushima'ya gitti. Korkarım ki radyasyon artacak. - Yesterday my brother went to Fukushima to help the inhabitants. I'm afraid that the radiation will increase.

Yirmi dokuz yıldır Çernobil'de radyasyona maruz kalmış tilkiler artık insanlardan korkmuyor ve onların ellerinden yemeye hazırlar. - The foxes that have been exposed to radiation in Chernobyl for twenty-nine years no longer fear humans and are willing to eat from their hands.

radiation monitoring
(Nükleer Bilimler) radyasyon taraması
annihilation radiation
(Fizik) yokoluş ışınımı
background radiation
(Kimya) zemindeğer ışıması
background radiation
(Askeri) temel radyasyon
circular radiation
(Bilgisayar,Teknik) dairesel ışıma
coherent radiation
(Aydınlatma) koheran ışınım
effective radiation
(Meteoroloji) etkin radyasyon
emission of radiation
(Fizik) radyasyon emisyonu
expose to radiation
radyasyona tabi tutmak
expose to radiation
radyasyona maruz bırakmak
incident radiation
(Gıda) anlık ışıma
incident radiation
(Gıda) gelen ışıma
interference radiation
parazit yayılımı
ionizing radiation
(Fizik,Tıp,Teknik) iyonizan radyasyon
leakage radiation
kaçak ışıma
most suitable radiation
(Askeri) en uygun radyasyon
prompt radiation
(Askeri,Çevre) ani radyasyon
radiation
(Askeri) akı
radiation
ışınsal
radiation
yayınım
radiation
radrasyon
radiation
ışın saçma
radiation area
(Çevre) radyasyon alanı
radiation biology
radyasyon biyolojisi
radiation biology
radyobiyoloji
radiation damage
radyasyon hasarı
radiation effects
radyasyon etkileri
radiation field
ışıma alanı
radiation injury
(Tıp) radyasyon hasarı
radiation lobe
(Bilgisayar,Teknik) ışıma lobu
radiation pattern
(Bilgisayar,Teknik) ışıma örüntüsü
solar radiation
(Aydınlatma,Gıda) güneş ışınımı
synchrotron radiation
sinkrotron radyasyonu
synchrotron radiation
(Aydınlatma) senkrotron ışınım
thermal radiation
(Çevre) termal radyasyon
actinic radiation
aktinik radyasyon
alpha radiation
alfa ışınımı
alpha radiation
alfa radyasyonu
angle of radiation
radyasyon açısı
annihilation radiation
anilasyon radyasyonu
background radiation
geri plan radyasyonu
beta radiation
beta radyasyonu
cerenkov radiation
cerenkov ışınımı
characteristic radiation
karakteristik radyasyon
continuous radiation
sürekli radyasyon
corpuscular radiation
parçacık radyasyonu
cosmic radiation
kozmik radyasyon
dielectric radiation
dielektrik radyasyon
dipole radiation
dipol radyasyonu
electromagnetic radiation
elektromanyetik radyasyon
hard radiation
sert aşınım
heterogeneous radiation
çoktürel ışınım
heterogeneous radiation
heterojen radyasyon
homogeneous radiation
homojen radyasyon
infrared radiation
enfraruj radyasyon
intensity of radiation
radyasyon şiddeti
intensity of radiation
ışınım yeğinliği
ionizing radiation
iyonlaştırıcı radyasyon
l radiation
l radyasyonu
leakage radiation
sızıntı ışınım
leakage radiation
kaçak radyasyon
neutron radiation
nötron radyasyonu
radiation
ısı/ışın saçma
radiation accident
radyasyon hasarı
radiation chemistry
radyasyon kimyası
radiation counter
radyasyon sayacı
radiation damage
radyasyon zararı
radiation detector
radyasyon detektörü
radiation intensity
radyasyon şiddeti
radiation pressure
ışınım basıncı
radiation pressure
radyasyon basıncı
radiation protection
radyasyondan korunma
radiation source
radyasyon kaynağı
radiation source
ışınım kaynağı
solar radiation
güneş radyasyonu
stray radiation
dağınık ışınım
stray radiation
dağınık radyasyon
thermal radiation
ısıl ışınım
thermal radiation
termik radyasyon
ultraviolet radiation
ültraviyole radyasyon
ultraviolet radiation
morötesi ışınım
visible radiation
görünebilir radyasyon
Neutron radiation
(Kimya) Nötron ışıması

Neutron radiation is the diffusion of Neutrons from the radioactive nucleus.

actinic radiation
kimyasal radyasyon
adaptive radiation
(Biyoloji) Uyarlı ışınım
black body radiation
Kara cisim radyasyonu
black body radiation
Siyah cisim ışıması
exposure to ionising radiation
İyonize maruz radyasyon
gamma radiation
gama radyasyonu, gama isimasi
hazard generated by radiation
tehlike radyasyon tarafından üretilen
heating radiation
ısıtma radyasyon
high-speed anti-radiation missile
yüksek hızlı anti-radyasyon füzesi
law of radiation
ışınım yasası
light amplification by stimulated emission of radiation
Lazer (İngilizce LASER (Light Amplification by Stimulated Emission of Radiation) fotonları uyumlu bir huzme şeklinde oluşturan optik kaynak
monochromatic radiation
monokromatik radyasyon, tekrenkli ışınım
particle radiation
parçacık ışınımı
primary radiation
primer radyasyon, birincil ışınım
quadrupole radiation
kuadrupol radyasyonu
radiation counter
radyasyon sayacı, ışıma sayacı
radiation damage
radyasyon zararı, ışınım zararı
radiation damping
radyasyon amortismani, isinimla sonum
radiation efficiency
anten verimi
radiation flux
radyasyon akışı, ışınım akışı
radiation impedance
radyasyon empedansi, ışınım çelisi
radiation length
radyasyon uzunluğu, ışınım uzunluğu
radiation loss
radyasyon kaybı, ışınım yitimi
radiation pyrometer
radyasyon pirometresi, ışınım yüksekisiölçeri
radiation receiver
radyasyon alıcısı, ışınım alıcısı
radiation resistance
radyasyon direnci, ışınım direnci
radiation sickness
radyasyon hastalık
radiation source
radyasyon kaynağı, ışınım kaynağı
radiation temperature
radyasyon sıcaklığı, ışınım sıcaklığı
radiation trap
radyasyon kapanı, ışınım kapanı
recoil radiation
aksi tesir radyasyonu, geritepki ışınımı
resonance radiation
rezonans radyasyonu, çinlanim ışınımı
soft radiation
zayıf radyasyon
stray radiation
dağınık radyasyon, dağınık ışınım
ultraviolet radiation
ultraviyole radyasyon, morötesi ışınım
acute radiation dose
(Askeri) AKUT RADYASYON DOZU: Ani olarak ve biyolojik iyileşmenin mümkün olamayacağı kadar kısa bir sürede maruz kalınan toplam iyonlaştırıcı radyasyon dozu
acute radiation dose
(Askeri) aşırı radyasyon dozu
acute radiation dose
(Çevre) akut radyasyon dozu
acute radiation health effects
(Tıp) radyasyon akut etkileri
acute radiation syndrome
(Çevre) akut radyasyon sendromu
adaptive radiation
(Tıp) adaptif yayılma
adaptive radiation
(Tıp) hızlı yayılım
adaptive radiation
(Pisikoloji, Ruhbilim) uyumlayıcı yayılma
adaptive radiation
bir grup hayvanın bir çok ekolojik ortamı doldurmak üzere evrim geçirmesi
alpha radiation
alfa ışıması
ambient radiation
ortam ışınımı
annihilation radiation
(Nükleer Bilimler) anilasyon radyasyonu,yok olma radyasyonu
antenna radiation
anten isinimi
assigned radiation monitor
(Çevre) yetkili radyasyon gözlemcisi
background radiation
(Nükleer Bilimler) çevre radyasyonu ,background radyasyon,doğal ışınım
background radiation
(Askeri) TEMEL RADYASYON: Kişilerin devamlı maruz kaldığı çevreden veya bölümün içinden çıkan nükleer (veya iyonlaştırıcı) radyasyon
beta radiation
beta ışıması
capture gamma radiation
(Nükleer Bilimler) kapma gama ışını,yakalama gama ışınımı
cerenkov radiation
(Nükleer Bilimler) cerenkov ışıması,cerenkov radyasyonu
characteristic radiation
(Fizik) karakteristik ışınım
cherenkov radiation
(Nükleer Bilimler) cherenkov ışınları
chronic radiation dose
(Askeri) kronik radyasyon dozu
chronic radiation dose
(Çevre) kronik maruz kalma miktarı
chronic radiation dose
(Askeri) KRONİK RADYASYON DOZU: Uzun bir süre, fasılalı veya sürekli alınan iyonlaştırıcı radyasyon dozu. Kronik radyasyon dozu radyasyon hastalığı ve ölüme neden olacak kadar yüksek olabilir, ancak alçak dozda alınırsa akut hücresel zararın büyük bölümü iyileştirilebilir. Ayrıca bakınız: "acute radiation dose", "radiation dose rate"
circular radiation
dairesel isima
continuous radiation
(Fizik) beyaz radyasyon
control of electromagnetic radiation
(Askeri) (IADB) ELEKTROMANYETİK RADYASYON KONTROLU (AMERİKAN SAVUNMA KURULU): Bir taarruz veya yakın tehlike halinde düşman uçaklarının güdümlü füzelerinin veya diğer cihazlarının seyrüseferine yardımcı olacak olan elektromanyetik radyasyonun kullanımını asgari kılmayı amaçlayan bir harekat planı
cosmic radiation
(Nükleer Bilimler) kozmik ışınım
deterministic effects of radiation
(Nükleer Bilimler) bkz. radyasyonun eşıklı etkileri
diffuse sky radiation
(Aydınlatma) yayınık gök ışınımı
direct radiation
(Nükleer Bilimler) doğrudan radyasyon
duct radiation
kanal radyasyonu
electromagnetic radiation
elektromanyetik ışıma
electromagnetic radiation
elektromanyetik radyasyon,elektromanyetik yayılma
electromagnetic radiation
(Askeri) ELEKTROMANYETİK RADYASYON TEHLİKELERİ: Gönderici/anten sistemlerinin neden olduğu tehlikeler şunlardır. a. Mühimmat, personel, yakıt doldurma faaliyetlerinin civarında belirlenen güvenli seviyenin üstünde elektromanyetik radyasyon üretmek. b. Mevcut seviyeleri tehlikeli dereceye artırmak. c. Planlanan çalışma veya işgal edilen yere tehlike arzedecek şekilde, elektromanyetik radyasyona maruz kalan bir bölgede konuşlandırılmış personel, yakıt ikmal veya mühimmat tesisinin bulunması. Bu tehlikeler yeterli yoğunlukta elektromanyetik alanın aşağıdakileri gerçekleştirmek üzere bulunması halinde olacaktır: a) Elektronik patlayıcı veya diğer silah sistemleri, mühimmat veya patlayıcı aygıtların hassas patlayıcı aygıtların hassas patlayıcı unsurlarını harekete geçirmek için yeterince büyük oranda indükleme veya akım/voltaj oluşturma. b) İnsanlara veya doğaya zarar ya da yaralanma oluşturmak. c) Etkilenmiş alanda muamele görmesi gereken alev alıcı malzeme karışımlarını ateşlemek için yeterli büyüklükte kıvılcımlar oluşturmak. Aynı zamanda EMD tehlikeleri, RADHAZ, HERO'da denir
electromagnetic radiation
(Nükleer Bilimler) elektromagnetik radyasyon
electromagnetic radiation hazards
(Askeri) elektromanyetik radyasyon tehlikesi
electromagnetic radiation hazards
(Askeri) elektromanyetik radyasyon yayılım zararları
electromagnetic radiation hazards; hazards of electromagnetic radiation to ordna
(Askeri) elektromanyetik radyasyonun olumsuz etkileri; elektromanyetik radyasyonun ordu donatım malzemesine olumsuz etkileri
elektromagnetic radiation
(Nükleer Bilimler) elektromanyetik radyasyon
emission of radiation
(Nükleer Bilimler) ışınım yayılması
equivalent radiation energy
(Nükleer Bilimler) eşdeğer radyasyon enerjisi
gamma radiation
(Nükleer Bilimler) gama ışınımı
gamma radiation
gama radyasyonu
gamma radiation
gama ışıması
gas flow radiation dedector
(Nükleer Bilimler) gaz geçişli ışınım algılayıcı
genetic effect of radiation
(Nükleer Bilimler) radyasyonun genetik etkisi
give off radiation
dışarıya radyasyon vermek
give off radiation
radyasyon yaymak
global radiation
küresel yayınım
global solar radiation
(Aydınlatma) toplam güneş ışınımı
hazards of electromagnetic radiation to fuel
(Askeri) elektromanyetik radyasyonun yakıta olan olumsuz etkileri
hazards of electromagnetic radiation to personnel
(Askeri) elektromanyetik radyasyonun personele olumsuz etkileri
heterogeneous radiation
(Fizik) ayrışık ışınım
homogeneous radiation
(Fizik) tektürel ışınım
indirect radiation
(Bilgisayar,Teknik) dolaylı ışıma
indirect radiation
dolayli isima
induced radiation
(Askeri) dolaylı radyasyon
induced radiation
(Çevre) indüklenmiş radyasyon
induced radiation
(Askeri) DOLAYLI RADYASYON: Radyoaktif malzemelere maruz kalmanın özellikle nötronları alıp hıfzetmenin bir sonucu olarak meydana getirilen radyasyon. Bak. "contamination", "initial radiation", "residual radiations", "residual radioactivity"
infrared radiation
kızılötesi ışıma
infrared radiation
infrared ışıma
infrared radiation
(Tıp) kızıl ötesi ışınlar
infrared radiation
(Çevre) kırmız altı radyasyon
infrared radiation
enfraruj ışınları
infrared radiation
(Askeri) ENFRARUJ RADYASYON: Elektromanyetik tayfın enfraruj bölümünde yayınlanan veya yansıtılan radyasyon
infrared radiation
(Aydınlatma,Fizik) kızılaltı ışınım
infrared radiation
(Tıp) infraruj ışınları
infrared radiation therapy
(Tıp) infrared ışın tedavisi
initial radiation
(Askeri) ilk radyasyon
initial radiation
(Askeri) İLK RADYASYON, BAŞLANGIÇ RADYASYONU: Bir nükleer infilakla birlikte, infilakın sebep olduğu ateş topundan yayılan nükleer radyasyon, ani radyasyon. Bu radyasyon; infilak anında yayılan nötron ve gamma ışınları ile, yükselen ateş topu ve duman sütununun yaydığı alfa, beta ve gamma ışınlarını ihtiva eder. Artık radyasyonun aksine olarak, yer yüzündeki insan ve eşya üzerine dağılması, kaynağın (nükleer buluttaki maddelerin) yükselen bulut tarafından, arzın tesirli radyasyon menzili dışına çıkarılması ile sona erer. Bak. "induced radiation", "residual radioactivity"
initial radiation
(Askeri,Çevre) başlangıç radyasyonu
internal radiation
(Askeri) DAHİLİ RADYASYON, VÜCUT RADYASYONU: Vücuttaki radyoaktif maddelerden çıkan nükleer radyasyon (alfa ve beta zerrecikleri ile gamma radyasyonu)
international Commission on Radiation
(Nükleer Bilimler) URBÖK Uluslararası Radyasyon Birimleri
ionizating radiation
(Nükleer Bilimler) iyonlaştırıcı radyasyon
ionization radiation
(Nükleer Bilimler) iyonlaşıcı radyasyon
ionizing radiation
(Nükleer Bilimler) iyonlaştırıcı radyasyon,iyonize edici radyasyon
ionizing radiation
(Askeri) İYONLAYAN IŞIMA (HV.): Direkt veya endirekt olarak iyonlanmaya sebep olan (elektromanyetik veya çok küçük zerrelere ait) ışıma
isotropic radiation
(Meteoroloji) izotropik radyasyon
lakage radiation
(Nükleer Bilimler) sızıntı radyasyon
leakage radiation fix
sızıntı ışınım
leakage radiation fix
kaçak radyasyon
luminous efficacy of radiation
(Aydınlatma) ışıksal verim
mixed radiation
karma ışınım
monitoring of radiation
(Çevre) radyasyonun izlenmesi
monochromatic radiation
(Nükleer Bilimler) tek frekanslı radyasyon
monoenerrgetic radiation
(Nükleer Bilimler) tek enerjili radyasyon
natural radiation
(Nükleer Bilimler) doğal radyasyon
nocturnal radiation
(Meteoroloji) gece radyasyonu
nocturnal radiation
(Çevre) gece radyasyon
nuclear radiation
(Askeri) NÜKLEER RADYASYON: Muhtelif nükleer işlemlerdeki atom çekirdeklerinden dışarıya verilen parçacıklar ve elektromanyetik radyasyon. Silahlar bakımından önemli nükleer radyasyonlar alfa ve beta parçacıkları, gama ışınları ve nötronlardır. Bütün nükleer radyasyonlar iyonlaşma radyasyonlarıdır ancak bu ifadenin tersi doğru değildir. Örneğin iyonlaşma radyasyonları içinde geçen X ışınları, atom çekirdeğinden ortaya çıkmadığı için nükleer radyasyon değildir
out of band radiation
bant disi isinim
parasitic radiation
parazit isinim
pelvic radiation irradiation
(Tıp) pelvis ışınlaması
pelvic radiation therapy
(Tıp) pelvis ışınlaması
penetrating radiation
(Meteoroloji) etkili radyasyon
penetrating radiation
(Çevre) nüfuz edici radyasyon
personal radiation monitor
(Nükleer Bilimler) kişisel radyasyon izleyicisi,kişisel ışınım ölçüm cihazı,kişisel radyasyon ölçüm aygıtı(cihazı)
İngilizce - İngilizce
X-ray radiation

İlgili Terimler

Cerenkov radiation
light emitted by the Cerenkov effect
Hawking radiation
The radiation presumed to be given off by a black hole by quantum mechanical processes
Van Allen radiation belt
Any of similar areas around another planet
Van Allen radiation belt
Either of two torus-shaped areas of high-energy charged particles which partly surround Earth, trapped by its magnetic field. The areas are characterised by intense radiation. When the belts "overload", particles strike the upper atmosphere and fluoresce, causing the polar aurora
Van Allen radiation belts
plural form of Van Allen radiation belt
X-ray radiation
electromagnetic radiation consisting of X-rays, radiation in the X-ray spectrum, of shorter wavelength and higher frequency than ultraviolet and longer wavelength and lower frequency than gamma rays
absorption of radiation
the transfer of electromagnetic energy into heat energy within a gas or liquid through which the radiation is passing
adaptive radiation
the diversification of species into separate forms that each adapt to occupy a specific environmental niche
alpha radiation
The radiation of alpha particles as a result of radioactive decay
background radiation
ionizing radiation that is naturally present in the environment
beta radiation
The radiation of beta particles as a result of radioactive decay
cosmic background radiation
The faint, uniform flux of microwave radiation that permeates all space and is the redshifted residual effect of the Big Bang
electromagnetic radiation
Radiation (quantized as photons) consisting of oscillating electric and magnetic fields oriented perpendicularly to each other, moving through space
gamma radiation
electromagnetic radiation consisting of gamma rays
gravitational radiation
a hypothetical wave, produced by an accelerating mass, that would be propagated at the speed of light
infrared radiation
Electromagnetic radiation having a wavelength approximately between 1 micrometre and 1 millimetre; perceived as heat
ionizing radiation
High-energy radiation that is capable of causing ionization in substances through which it passes; also includes high-energy particles
microwave radiation
electromagnetic radiation that has a frequency of about 3 to 30 GHz
microwave-radiation
Attributive form of microwave radiation

microwave-radiation exposure.

neutron radiation
A form of non-ionizing radiation consisting of free neutrons
non-ionizing radiation
Radiation that does not cause atmospheric ionization; electrically neutral radiation
radiation
The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat
radiation
The transfer of energy via radiation (as opposed to convection or conduction)
radiation
The process of radiating waves or particles
radiation
Radioactive energy
radiation biology
the study of the effect of ionizing and nonionizing radiation on biological systems
radiation chemistry
the study of the chemical changes that result from the absorption of ionizing radiation
radiation damage
harmful changes in the properties of materials caused by interactions with ionizing radiation
radiation dose
The amount of radiation to which something is exposed
radiation doses
plural form of radiation dose
radiation fog
a fog produced by the cooling of air at the ground through the release of electromagnetic energy in the form of heat
radiation hardening
the protection of semiconductor devices from the effects of ionizing radiation
radiation physics
The study of the effects of ionizing radiation on matter, and of its measurement
radiation poisoning
radiation sickness
radiation pressure
the pressure exerted by electromagnetic radiation on an object on which it impinges, as a consequence of its momentum
radiation pyrometer
a device that measures the intensity of radiation from, and thus the temperature of, a hot body
radiation shielding
physical barriers designed to provide protection from the effects of ionizing radiation
radiation shielding
the technology of providing such protection
radiation sickness
Any illness produced by ionizing radiation with symptoms ranging from nausea through to death
radiation therapy
the use of ionizing radiation to treat disease, especially cancer
solar radiation
All the electromagnetic radiation and subatomic particles radiated from the Sun, especially that part that reaches the Earth
submillimeter wave radiation
terahertz radiation
submillimeter wave radiation
Electromagnetic waves with a wavelength less than one millimeter (the band begins at about 0.3 THz). A term often used by radio astronomers
submillimeter wave radiation
Electromagnetic waves roughly in the band less than 1 millimeter in wavelength, used as a synonym for T-ray or T-wave
synchrotron radiation
the electromagnetic radiation emitted by the accelerating charged particles in a synchrotron that are moving at near the speed of light
terahertz radiation
submillimeter wave radiation
terahertz radiation
Especially electromagnetic waves in the range 0.1-30 THz (or subranges there of, see T-rays or T-waves)
terahertz radiation
Electromagnetic waves with frequencies around one terahertz
thermal radiation
The electromagnetic radiation emitted from a body as a consequence of its temperature; increasing the temperature of the body increases the amount of radiation produced, and shifts it to shorter wavelengths (higher frequencies) in a manner explained only by quantum mechanics
Neutron radiation
Neutron radiation is a kind of ionizing radiation which consists of free neutrons. A result of nuclear fission or nuclear fusion, it consists of the release of free neutrons from atoms, and these free neutrons react with nuclei of other atoms to form new isotopes, which, in turn, may produce radiation. This will result in a chain reaction of nuclear radiation, which makes radiation dangerous and harmful over great areas of space
Planck's law of radiation
A law that is the basis of quantum theory, which states that the energy of electromagnetic radiation is confined to indivisible packets (quanta), each of which has an energy equal to the product of the Planck constant and the frequency of the radiation
law of radiation
A law that is the basis of quantum theory, which states that the energy of electromagnetic radiation is confined to indivisible packets (quanta), each of which has an energy equal to the product of the Planck constant and the frequency of the radiation
Air-Launched Anti-Radiation Missile
ALARM, missile with an infrared transmitter that zeroes in on targets that give off heat
Cerenkov radiation
Light emitted in the Cerenkov effect
Cherenkov radiation
Variant of Cerenkov radiation. Light produced by charged particles when they pass through an optically transparent medium at speeds greater than the speed of light in that medium. For example, when electrons from a nuclear reactor travel through shielding water, they do so at a speed greater than that of light through water and they displace some electrons from the atoms in their path. This causes emission of electromagnetic radiation that appears as a weak bluish-white glow. The phenomenon is named for Pavel A. Cherenkov (1904-1990), who discovered it; he shared a 1958 Nobel Prize with Igor Y. Tamm (1895-1971) and Ilya M. Frank (1908-1990), who interpreted the effect
Hawking radiation
A form of radiation believed to emanate from black holes, arising from the creation of pairs of subatomic particles in the space adjacent to the black hole, with one particle falling into the black hole and the other radiating away. The energy lost to such radiated particles is believed to cause the eventual disappearance of the black hole. Radiation theoretically emitted from just outside the event horizon of a black hole. Stephen W. Hawking proposed in 1974 that subatomic particle pairs (photons, neutrinos, and some massive particles) arising naturally near the event horizon may result in one particle's escaping the vicinity of the black hole while the other particle, of negative energy, disappears into it. The flow of particles of negative energy into the black hole reduces its mass until it disappears completely in a final burst of radiation
High-speed Anti-Radiation Missile
HARM, type of missile that zeroes in on sources of radar radiation
Van Allen radiation belts
Two doughnut-shaped zones of highly energetic charged particles (see electric charge) trapped at high altitudes in Earth's magnetic field. Named for James A. Van Allen (b. 1914), who discovered them in 1958, they are most intense over the Equator and effectively absent above the poles. The two zones merge gradually, with the flux of charged particles showing two regions of maximum density. The inner one, mostly protons thought to be produced by primary cosmic rays striking the atmosphere, is centred about 3,700 mi (6,000 km) above Earth's surface. The outer region includes some helium ions from the solar wind and is centred about 12,500 mi (20,000 km) above Earth's surface. Intense solar activity (see solar cycle) causes disruptions of the belts, linked in turn with such phenomena as auroras and magnetic storms
acoustic radiation pressure
(acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave
actinic radiation
electromagnetic radiation that can produce photochemical reactions
adaptive radiation
rapid speciation and diversification of a group into unoccupied ecological niches
adaptive radiation
the progressive modification of a structure in response to different environments
adaptive radiation
the evolution of a single ancestor species into several new species within a relatively short period of time and in a certain geographic area The plants and animals of the Galápagos Islands are a result of adaptive radiation, where one plant or one animal species diversified into many species that fill a variety of ecological roles For example, more than a dozen species of finches evolved from a single founding species that colonized the islands from the mainland of South America
adaptive radiation
the evolution of a single evolutionary stock into a number of different species
adaptive radiation
The evolution of new species or sub- species to fill unoccupied ecological niches
adaptive radiation
The rapid production of new species within a clade fol lowing invasion of a new geographic region, or exploitation of a new ecologic opportunity
adaptive radiation
the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches
adaptive radiation
Diversification of a species or single ancestral type into several forms that are each adaptively specialized to a specific environmental niche
adaptive radiation
The evolution of species into a diversity of previously unoccupied ecological niches
adaptive radiation
The evolution and spreading out of related species into new niches
adaptive radiation
the evolution [2: speciation ] of a diverse range of species occupying many habitats and new niches from some single ancestral stock (phyletic line) Lon-term associations (interactions) can produce niche diversification, a frequently observed situation in which actual or potential competitors specialize to use slightly different components of the local environment The one mechanism for this forms the basis of holism described in this book and is the evolution of reduced interactive costs between interactors DARWIN's 14 species of finches [2: ] are an example of this They evolved from a single species of ground-dwelling, seed-eating finch [2: back to human evolution ]; [2: back to Argument ]; [2: back to human evolution introduction ]
adaptive radiation
Evolutionary divergence by the members of a single phylogenetic line into a number of distinctive types or adaptive forms (D)
alpha radiation
A positively charged particle made up of two neutrons and two protons It is the least penetrating of the three common forms of radiation, and can be stopped by a sheet of paper
alpha radiation
Radiation consisting of helium nuclei (atomic wt 4, atomic number 2) that are discharged by radioactive disintegration of some heavy elements, including uranium-238, radium-226, and plutonium-239
alpha radiation
The least penetrating type of nuclear radiation; not considered dangerous unless alpha-contaminated particles enter the body (FEMA-SS)
alpha radiation
Alpha rays consist of nuclei of the element helium and carry a positive charge Penetrates the least, but does great damage in a small area (see radiation)
alpha radiation
The most energetic but least penetrating form of radiation It can be stopped by a sheet of paper and cannot penetrate human skin However, if an alpha-emitting isotope is inhaled or ingested, it will cause highly concentrated local damage
alpha radiation
An emission of alpha particles (helium nuclei) from a material undergoing nuclear transformation
alpha radiation
Emission of positively charges particles from nucleus of an atom
alpha radiation
the radiation of alpha particles during radioactive decay
alpha radiation
The least penetrating type of nuclear radiation; not considered dangerous unless alpha-contaminated particles enter the body
alpha radiation
A type of radiation reulting from the emission of helium nuclei from the nuclei of atoms
alpha radiation
Alpha particles can be stopped by very thin absorbing materials, e g : a few sheets of paper, or, 1/64th inch of aluminum foil Since alpha particles travel only short distances in air, and alpha particles up to 7 5 MeV are absorbed by the outer layer of skin (dead tissue), alpha radiation is not considered an external exposure problem
alpha radiation
A helium nucleus emitted spontaneously from radioactive elements It is dissipated in a few centimeters of air or less than 0 005 mm of aluminum
background radiation
Radiation from cosmic sources, naturally occurring radioactive materials such as granite, and global fallout from nuclear testing
background radiation
Radiation in the natural human environment originating from cosmic rays and from the naturally radioactive elements of the earth, including those within the human body The level of radioactivity in an area which is produced by sources other than the one of specific interest
background radiation
Naturally occurring ionising radiation, including cosmic rays and radiation from naturally occurring radioactive materials
background radiation
The radiation in man's natural environment, including cosmic rays and radiation from the naturally radioactive elements, both outside and inside the bodies of humans and animals It is also called natural radiation Man-made sources of radioactivity contribute to total background radiation levels
background radiation
The radioactivity in the environment including cosmic rays from space and radiation that exists everywhere-in the air, earth, and man-made materials; people in the U S receive 1,000 to 2,500 microsieverts (100 to 250 millirems) of background radiation per year
background radiation
the ionizing radiation dose from naturally occurring sources: cosmic rays (gamma rays from outer space), about 30 millirems/year; and radioactive isotopes in the earth's crust, primarily uranium, thorium, radium and potassium, about 30 millirems/year; for an external total dose of about 60 millirems/yr; in addition there is an internal dose from ingestion and inhalation of these naturally occurring radioactive isotopes of about 40 millirems/yr; making for a grand total of about 100 millirems/yr of unavoidable background radiation dose
background radiation
radiation is around us everyday, including natural radiation, cosmic radiation and radiation in the air we breathe
background radiation
The natural radiation present in everything surrounding us Examples of this include radiation from the sun's rays, radiation from elements in the ground, and radiation from within our bodies Background radiation varies with location and time, and it can never be reduced to zero
background radiation
radiation coming from sources other than those being observed
background radiation
The radiation of man's natural environment originating primarily from the naturally radioactive elements of the earth and from the cosmic rays The term may also mean radiation extraneous to an experiment
background radiation
Nuclear (or ionizing) radiations arising from within the body and from the surroundings to which individuals are always exposed The main sources of the natural background radiation are potassium-40 in the body, potassium-40 and thorium, uranium, and their decay products (including radium) present in rocks and soil, and cosmic rays
background radiation
Nuclear (or ionizing) radiation arising from within the body and from the surroundings to which individuals are always exposed (JP 1-02)
background radiation
Radiation from cosmic sources, naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material) and global fallout as it exists in the environment from the testing of nuclear explosive devices The typically quoted average individual exposure from background radiation is 360 millirems or 3 6 millisieverts per year
background radiation
The naturally occurring nuclear radiation coming from outer space as cosmic radiation, or from naturally occurring radioactive elements such as uranium and radium in the materials of the earth
background radiation
(see cosmic background radiation)
background radiation
Radiation that occurs naturally in the environment from cosmic rays and radon or from atomic tests carried out by man
background radiation
The radiation levels that occur naturally (from other than man-made sources) in the environment Naturally occurring radiation comes from sources such as the sun (cosmic rays), radon from the ground, elements in the soil, water and food
background radiation
The natural radioactivity in the environment Natural radiation consists of cosmic rays, filtered through the atmosphere from outer space, and radiation from the naturally radioactive elements in the earth (primarily uranium, thorium, radium and potassium) Also known as natural radiation
background radiation
low-level radiation suffusing the surface of the earth
background radiation
The ionising radiation in the enviroment to the which we are all exposed It comes from many sources, outer space, the sun, the rocks and soil under our feet, the buildings we live in, the air we breathe, the food we eat, and from our own bodies
background radiation
naturally occurring (i e non-enriched) radiation in the world around us to which humans are exposed constantly, including radiation from the sun, bricks, the earth, and naturally occurring radioactive isotopes in food
background radiation
Radiation from cosmic sources; naturally occurring radioactive materials, including radon and global fallout as it exists in the environment from the testing of nuclear explosive devices The typically quoted average individual exposure from background radiation is 360 mrems per year
background radiation
the background of radiation from the Universe is strongest in the frequency range 3 x 108 to 3 x 1011 Hertz and was first discovered to be coming from all directions in the sky in 1965 It is believed to be the cosmologically redshifted radiation released by the Big Bang itself
background radiation
The radiation of man's natural environment originating primarily from the naturally radioactive elements of the earth (including radon) and from cosmic rays The term may also mean radiation extraneous to an experiment
background radiation
The amount of radiation to which a member of the general population is exposed from natural sources, such as terrestrial radiation from naturally occurring radionuclides in the soil, cosmic radiation originating from outer space, and naturally occurring radionuclides deposited in the human body
background radiation
The naturally-occurring ionising radiation which every person is exposed to, arising from the earth's crust (including radon) and from cosmic radiation
background radiation
Radiation from cosmic sources; naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material) and global fallout as it exists in the environment from the testing of nuclear explosive devices It does not include radiation from source, byproduct, or special nuclear materials regulated by the Nuclear Regulatory Commission The typically quoted average individual exposure from background radiation is 360 millirems per year
beam radiation
Solar radiation that is not scattered by dust or water droplets
beam radiation
synonym for direct normal irradiance, the amount of solar radiation from the direction of the sun
beta radiation
Radiation consisting of beta particles
beta radiation
radiation of beta particles during radioactive decay
beta radiation
A type of nuclear radiation that is more penetrating that alpha radiation and can damage skin tissue and harm internal organs
beta radiation
Radiation emitting beta particles Biosphere The part of the earth crust and the atmosphere where living organisms can develop and live
beta radiation
An electron (or a particle of equal weight to an electron but with a positive electrical charge) that is emitted from a radionuclide It is less damaging than the same dose of alpha radiation but more penetrating Beta radiation can be stopped by a thin sheet of metal or plastic
beta radiation
Emission of negatively charged particles (electrons) from the nucleus of an atom
beta radiation
e g emitted by tritium: a high speed electron, small in mass, moderate penetrating abilities, e g unable to penetrate more than a few millimeters of biological tissue
beta radiation
Though Beta particles have a greater penetration in any absorber than alpha particles, they can still be stopped by thin absorbing materials, e g : 1 inch of wood, or, 1/4 inch of Lucite However, bremsstrahlung must be considered in shielding beta radiation: the higher the atomic number (Z) of the absorber, the greater the percentage of bremsstrahlung Combination shields are effective, e g : for transport containers; a low-Z absorber can be used to stop the betas, followed by a high-Z absorber to attenuate the bremsstrahlung
beta radiation
High-energy electrons (beta particles) emitted from certain radioactive material Can pass through 1 to 2 centimeters of water or human flesh and can be shielded by a thin sheet of aluminum Beta particles are more deeply penetrating than alpha particles but, because of their smaller size, cause less localized damage
black-body radiation
the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law
corpuscular radiation
alpha particles) or negatively (e
corpuscular radiation
a stream of atomic or subatomic particles that may be charged positively e
corpuscular radiation
neutrons
corpuscular radiation
beta particles) or not at all (e
cosmic background radiation
725 kelvin
cosmic background radiation
(cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2
cosmic background radiation
Electromagnetic radiation, mostly in the microwave range, believed to be the highly redshifted residual effect (see redshift) of the explosion billions of years ago from which, according to the big-bang model, the universe was created. It was discovered by accident in 1964 by Robert W. Wilson and Arno Penzias; its presence supports the predictions of big-bang cosmology
cosmic radiation
streams of highly penetrating charged particles bombarding the earth from outer space
cosmic radiation
radiation consisting of cosmic rays
electromagnetic radiation
radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
electromagnetic radiation
any type of electromagnetic wave (waves composed of undulating electrical fields and magnetic fields)
electromagnetic radiation
Energy propagated through free space or through a material medium in the form of electromagnetic waves. Examples include radio waves, infrared radiation, visible light, ultraviolet radiation, X rays, and gamma rays. Electromagnetic radiation exhibits wavelike properties such as reflection, refraction, diffraction, and interference, but also exhibits particlelike properties in that its energy occurs in discrete packets, or quanta. Though all types of electromagnetic radiation travel at the same speed, they vary in frequency and wavelength, and interact with matter differently. A vacuum is the only perfectly transparent medium; all others absorb some frequencies of electromagnetic radiation
exposure to radiation
being in contact with or unprotected from radioactive material
gamma radiation
Electromagnetic ionizing radiation which easily penetrates test biological tissue
gamma radiation
Radiation composed of photons emitted during the process of nuclear transition or annihilation of the particles High-energy electromagnetic radiation with a very short wavelength and no mass, which is emitted from many types of nuclei Gamma radiation is just like ordinary light and X-rays, but has a much higher energy Gamma radiation is very penetrating and can only be effectively absorbed by dense materials such as iron, concrete or lead The thickness of shielding required can be anything between a few centimetres and a few metres, depending on the energy and intensity of the radiation
gamma radiation
A form of electromagnetic, high energy radiation emitted from a nucleus Gamma radiation is essentially the same as X-rays and requires heavy shielding
gamma radiation
Electromagnetic radiation similar to light or x-rays, but much more energetic Requires lead or concrete shielding
gamma radiation
Gamma radiation is a type of high energy electromagnetic radiation which is emitted during the disintegration of certain radioactive isotopes such as 125I and 57Co, which are used as tracers in immunoassays Gamma emitting samples are measured in solid crystal scintillation counters These solid crystals, are usually thallium activated sodium iodide and are different sizes to accommodate lower and higher energy radioisotopes
gamma radiation
A type of ionizing, electromagnetic radiation that readily penetrates the body tissues of organisms Has a wavelength less than 0 03 nanometers
gamma radiation
High energy electomagnetic radiation that is emitted from an atom's nucleus has no mass or electrical charge has high penetrating power, and can pass though the human body
gamma radiation
Gamma radiation is short wavelength electromagnetic radiation, of the same physical nature as light, X-rays, radio waves, etc However, gamma radiation is highly penetrating (more so than X-rays) and depending on its energy, may require a considerable thickness of lead or concrete to absorb it Since gamma radiation causes ionisation it constitutes a biological hazard
gamma radiation
Waves of pure energy similar to x-rays, originating from the center of atoms
gamma radiation
Highly penetrating, short wavelength radiation emitted from the nuclei of atoms It is stopped by an adequate thickness of lead, concrete or other materials
gamma radiation
electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
gamma radiation
Gamma rays are high-energy, ionizing radiation that travel at the speed of light and have great penetrating power They can cause skin burns, severely injure internal organs and have long-term, physiological effects (FEMA-SS)
gamma radiation
Similar to x-ray (photon radiation) but much more powerful It is not a laser Gamma radiation is invisible, cannot be felt and is able to penetrate deep through tissues The radioactive source is Cobalt-60
gamma radiation
High-energy, short wavelength electromagnetic radiation emitted from the nucleus of an atom Gamma rays are very penetrating and are shielded by dense materials such as lead Gamma rays are similar to X rays
infrared radiation
Portion of the electromagnetic spectrum that extends from the microwave range to the red end of the visible light range. Its wavelengths vary from about 0.7 to 1,000 micrometres. Most of the radiation emitted by a moderately heated surface is infrared, and it forms a continuous spectrum. Molecular excitation produces extensive infrared radiation but in a discrete spectrum of lines or bands. Infrared wavelengths are useful for night-vision equipment, heat-seeking missiles, molecular spectroscopy, and infrared astronomy, among other things. The trapping of infrared radiation by atmospheric gases is also the basis of the greenhouse effect
ionizing radiation
high-energy radiation capable of producing ionization in substances through which it passes
neutron radiation
radiation of neutrons (as by a neutron bomb)
nuclear radiation
ionized radiation whose source is in the process of atomic splitting or nuclear fission
planck's radiation law
(physics) an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body
radiation
the spread of a group of organisms into new habitats
radiation
{i} energy radiated in the form of waves or particles; process of emitting energy in electromagnetic waves or moving particles; act of emitting, act of beaming or glowing
radiation
emission of energy in the form of waves or particles
radiation
a term with two broad meanings In the narrow sense, some type of electromagnetic wave: radio, microwave, light (infra-red, visible or ultra-violet), x-rays or gamma rays are all types of radiation Colloquially (the full term is "ionizing radiation") it means any spreading emission which can penetrate matter That includes x-rays and gamma rays, but also high-energy ions and electrons emitted by radioactive substances, accelerated by laboratory devices or encountered in space (e g the "radiation belt" and "cosmic radiation")
radiation
The emission and propagation of energy by means of electromagnetic waves or sub-atomic particles
radiation
The emission and propagation of energy by means of electromagnetic waves or particles (cf ionising radiation)
radiation
Energy in the form of electromagnetic waves or particles capable of damaging cells by removing electrons from atoms or molecules This damage can lead to cancer or other defects
radiation
Energy transmitted through space as waves or particles
radiation
Energy radiated in the form of waves or particles; photons
radiation
the act of spreading outward from a central source
radiation
The emission and propagation of energy in the form of electromagnetic waves
radiation
Energy moving through space in the form of waves or particles Radiation can be ionizing, like alpha particles, beta particles, neutrons and X-rays, or non-ionizing, like visible light, heat, microwaves and radio waves Non-ionizing means that the energy level is too low to ionize the atoms
radiation
the process of heat transfer by means of infra-red radiatins, a form of electromagnetic wave Electromagnetic waves do not need any material medium for their propagation Space is almost completely empty, so the sun's heat cannot reach us by conduction or convection Because electromagnetic waves don't need a medium they are able to travel through space Anything above the temperature of absolute zero is able to emit and absorb infra-red radiations Radiation is absorbed by darker surfaces and reflected by lighter surfaces This is why people wearing darker clothing in the summer are hotter than thoose wearing white or light clothing Those wearing black will absorb the radiaions, therefore their temperature will rise
radiation
The process by which energy is propagated through any medium by virtue of the wave motion of that medium Electromagnetic radiation, which emits heat and light, is one form Sound waves are another
radiation
Energy propogating in the form of electromagnetic waves or photons
radiation
The emission or release of energy in the form of waves or rays
radiation
some type of electromagnetic wave: radio, microwave, light (infrared, visible or ultraviolet), x-rays or gamma rays are all types of radiation
radiation
a radial arrangement of nerve fibers connecting different parts of the brain
radiation
Radiation is energy, especially heat, that comes from a particular source. The satellite will study energy radiation from stars. Process by which energy is emitted from a source and propagated through the surrounding medium, or the energy involved in this process. Radiation consists of a flow of atomic or subatomic particles or of waves. Familiar examples are light (a form of electromagnetic radiation) and sound (a form of acoustic radiation). Both electromagnetic and acoustic radiation can be described as waves with a range of frequencies and intensities. Electromagnetic radiation is also often treated as discrete packets of energy, called photons. All matter is constantly bombarded by radiation from cosmic and terrestrial sources, and radioactive elements emit several types of radiation (see radioactivity). See also Cherenkov ratiation, Hawking radiation, infrared radiation, synchrotron radiation, thermal radiation, ultraviolet radiation. braking radiation Cherenkov radiation cosmic background radiation electromagnetic radiation Hawking radiation infrared radiation enhanced radiation warhead radiation injury radiation pressure radiation therapy synchrotron radiation thermal radiation ultraviolet radiation Van Allen radiation belts
radiation
the act of spreading outward from a central source a radial arrangement of nerve fibers connecting different parts of the brain the spread of a group of organisms into new habitats energy that is radiated or transmitted in the form of rays or waves or particles the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
radiation
The emission of very fast atomic particles or rays by nuclei Some elements are naturally radioactive while others become radioactive after bombardment with neutrons or other particles The three major forms of radiation are alpha, beta, and gamma, named for the first three letters of the Greek alphabet
radiation
The transmission of energy through electromagnetic radiation; a method of transmitting energy through a vacuum Radiation is composed of particles of energy called photons The other two methods of transfering energy are convection and conduction
radiation
syndrome resulting from exposure to ionizing radiation (e g , exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
radiation
1 The process by which electromagnetic energy is propagated through free space by virtue of joint undulatory variations in the electric and magnetic fields in space This concept is to be distinguished from conduction and convection A group of physical principles known as the radiation laws comprise, to a large extent, the current state of practical knowledge of the complex radiative processes
radiation
(sol) Electromagnetic waves that directly transport ENERGY through space Sunlight is a form of radiation F - rayonnement S - radiacion
radiation
Energy radiated from an object in the form of waves or particles
radiation
The process of emitting: energy waves, such as heat and light from the sun to the earth or heat from the earth to space; particles of matter from the disintegration of the nuclei of atoms, such as gamma rays
radiation
the propagation of energy; for the purposes of this text primarily restricted to the propagation of acoustic energy through a medium [as opposed to electronic radiation (such as light, electricity, radio waves, etc ), which does not require a medium] Although primarily propagated by the vibration of a solid surface, acoustic radiation can also be generated by other means (see text)
radiation
energy that is radiated or transmitted in the form of rays or waves or particles
radiation
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
radiation
Radiation consists of very small particles of a radioactive substance. Large amounts of radiation can cause illness and death. They suffer from health problems and fear the long term effects of radiation
radiation
energy in the form of electromagnetic waves or particles
radiation
in the context of the RReDC, synonymous with electromagnetic radiation, or the energy produced by an oscillating electrical (and magnetic) field, transmitted by photons See Electromagnetic Spectrum
radiation
(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
radiation
The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness
radiation
Energy transfer in the form of electromagnetic waves or particles that release energy when absorbed by an object
radiation
Radiation is energy in transit in the form of high speed particles and electromagnetic waves Radiation is further defined into ionizing and non-ionizing radiation Ionizing radiation is radiation with enough energy so that during an interaction with an atom, it can remove tightly bound electrons from their orbits, causing the atom to become charged or ionized Examples are X-rays and electrons Non-ionizing radiation is radiation without enough energy to remove tightly bound electrons from their orbits around atoms Examples are microwaves and visible light
radiation field
a field that represents the energy lost from the radiator to space
radiation injury
Tissue damage caused by exposure to ionizing radiation. Structures with rapid cell turnover (e.g., skin, stomach or intestinal lining, and bone marrow) are most susceptible. High-dose irradiation of the last two causes radiation sickness. Nausea and vomiting subside in a few hours. They are followed in intestinal cases by abdominal pain, fever, and diarrhea leading to dehydration and a fatal shocklike state, and in bone-marrow cases (two to three weeks later) by fever, weakness, hair loss, infection, and hemorrhage. In severe cases, death occurs from infection and uncontrollable bleeding. Lower radiation doses can cause cancer (notably leukemia and breast cancer), sometimes years later. Radiation exposure in early pregnancy can produce abnormalities in the embryo, whose cells are multiplying rapidly
radiation pattern
The angular flux distribution radiating out from a fibre
radiation pattern
The angular flux distribution radiating out of a fibre In general, a radiation pattern of fibres is non-Lambertian because of a geometrical and waveguide effects
radiation pattern
A three-dimensional representation of the gain of a transmit or receive antenna as a function of the direction or radiation or reception
radiation pattern
A drawing of the coverage of speaker using a polar graph
radiation pattern
A diagram showing the intensity of the radiation field in all directions from a transmitting radio or radar antenna at a given distance from the antenna
radiation pattern
graphical representation (in polar or cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
radiation pattern
A graphical representation of the radiation of an antenna as a function of direction Cross sections in which radiation patterns are frequently given are vertical planes and the horizontal plane, or the principal electric and magnetic polarization planes Also called antenna pattern, lobe pattern, coverage diagram
radiation pattern
A graphical representation of power radiation of an antenna usually shown for the two principal planes, azimuth and elevation The radiation pattern of an antenna is usually measured in the far field which is generally considered to be beyond the distance of 2 times D2 divided by the wavelength (where D is the radiating length of the antenna)
radiation pressure
Pressure on a surface resulting from electromagnetic radiation that impinges on it. The pressure is a result of the momentum carried by the radiation. When radiation is reflected rather than absorbed, the radiation pressure is doubled. Radiation pressure can sometimes be great enough to produce a force that is useful
radiation pressure
the minute pressure exerted on a surface normal to the direction of propagation of a wave
radiation pyrometer
a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer
radiation sickness
Radiation sickness is an illness that people get when they are exposed to too much radiation. Illness induced by exposure to ionizing radiation, ranging in severity from nausea, vomiting, headache, and diarrhea to loss of hair and teeth, reduction in red and white blood cell counts, extensive hemorrhaging, sterility, and death. an illness that is caused when your body receives too much radiation
radiation sickness
disease which results from overexposure to radiation
radiation sickness
syndrome resulting from exposure to ionizing radiation e
radiation sickness
exposure to radioactive chemicals or to nuclear explosions; low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts andsome forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation
radiation therapy
or radiotherapy or therapeutic radiology Use of radiation sources to treat or relieve diseases, usually cancer (including leukemia). The ionizing radiation primarily used to destroy diseased cells works best on fast-growing cancers. However, radiation can also cause cancer (see radiation injury) and is no longer used for benign conditions. Other complications include nausea, hair loss, weight loss, and weakness. Radioactive substances may be implanted in tumours (see nuclear medicine). External radiation involves 10-20 sessions over several months, either after surgical removal of the growth or when surgery is impossible; it can deliver higher doses to deep tumours than implantation. Infrared radiation and ultraviolet radiation is applied with lamps to relieve inflammation
radiation therapy
{i} treatment of diseases by exposure to high-energy radiation from radioactive sources, use of radiation to damage cancer cells, radiotherapy
series of radiation treatments
sequence of cancer treatments, using radiation to heal cancer
solar radiation
The amount of radiation or energy received from the sun at any given point The "solar constant" is a measure of solar radiation: 0 140 watts per square centimeter, at a point just outside the Earth's atmosphere, located on a surface that is perpendicular to the line of radiation, and measured when the Earth is at its mean orbital distance from the sun (Source: Mintzer, 1992)
solar radiation
radiation from the sun
solar radiation
Light, heat, or other energy given out by the Sun
solar radiation
Radiation emitted from the Sun, which has wavelengths in the visible (light) and ultra–violet parts of the electromagnetic spectrum
solar radiation
The total electromagnetic radiation emitted by the sun See insolation, direct solar radiation, diffuse sky radiation, global radiation, extraterrestrial radiation, solar constant
solar radiation
The total electromagnetic radiation emitted by the sun About 99 9 percent of its energy output falls within the wavelength interval from 0 15 microns to 4 0 microns, with peak intensity near 0 47 microns About one-half of the total energy in the solar beam falls in the visible spectrum from 0 4 to 0 7 microns, and most of the other half falls in the near infrared, a small additional portion falling in the ultraviolet
solar radiation
Heat from the sun, which often changes the composition of the snow
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