(Askeri) TERMAL GEÇİŞ: İki nesne arasında kızılaltı görüntüde farklılığın kalmadığı, normal olarak günde iki defa, sıcaklık koşullarının uygun durumda olduğu zaman oluşan doğal olay
(Askeri) TERMAL (ISI) ENERJİ: Termal radyasyon vasıtasıyla ateş topundan intizar eden enerji. nükleer bir patlamadan belirli uzaklıktaki birim alana düşen toplam termal enerji miktarı genel olarak santimetre kare başına düşen kalori ile ifade edilir
(Askeri) TERMAL (ISISAL) ETKİLENME: Bir nükleer patlamanın tesir süresince belirli bir yüzeye çarpan ve santimetrekarede kalori ve/veya metre karedeki mega jul olarak ifade edilen termik radyasyonun toplam normal bileşeni
(Askeri) TERMAL ISINMA: Atmosferde ses üstü ve hipersonik seyirle meydana gelen ısıtma. Atmosfere dönen bir cismin burnu etrafında ısının, cisim kinetik enerjiyi kaybettikçe, safhalı (laminar) veya anaforlu (turbulent) bir akıştan geçişi
(Askeri) TERMAL GÖRÜNTÜ: Görüntüsü elde edilen nesnelerden yayınlanan veya yansıyan termal (ısı) enerjinin algılanıp kaydedilmesiyle oluşturulan görüntü
(Askeri) TERMAL YÜK: Uçuş ve atmosfere giriş sırasında aerodinamik ısınma, bir roket alevi sıcaklığına maruz kalma veya yakıcı maddeler (oxidizer) sistemindeki sıvı oksijenin soğuması etkileriyle, bazı yapı unsurlarının genişlemesi veya daralması (ya da her iki halin birlikte meydana gelmesi) sonucu, bir füze yapısı üzerinde meydana gelen zorlama
The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature (there are several different precise definitions) and a pressure of one atmosphere
The thermal transmission in unit time though unit area of a particular body or assembly having defined surfaces, when unit average temperature difference is established between the surfaces
A laboratory device in which a polymerase chain reaction is carried out repeatedly in cycles which in turn amplifies the sample DNA segments. The instrument contains a thermal block which contains the DNA samples and can precisely control the internal temperature
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
a rocket that is powered by a thermal source, such as a nuclear-thermal rocket or a solar-thermal rocket or a rocket powered by an energy beam such as a laser or microwave beam
The rate at which heat passes through a substance, expressed as the amount of heat that flows per unit time through unit area with a temperature gradient of one degree per unit distance
Thermal mass, in the most general sense, is any mass that absorbs and holds heat. In the architectural sense, it is any mass that absorbs and stores heat during sunny periods when the heat is not desirable in the living space of a building, and then releases the heat during overcast periods or during the night, when the heat is desirable. The same can be said for not absorbing heat during hot periods of weather
A thermal power station comprises all of the equipment and systems required to produce electricity by using a steam generating boiler fired with fossil fuels or biofuels to drive an electrical generator. Some prefer to use the term energy center because such facilities convert forms of energy, like nuclear energy, gravitational potential energy or heat energy (derived from the combustion of fuels) into electrical energy. However, power plant is the most common term in the United States, while power station prevails in many Commonwealth countries and especially in the United Kingdom
a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251 997 calories
The quantity of heat required to increase the temperature of one pound of water one degree Fahrenheit (The Recycler's Lexicon: A Glossary of Contemporary Terms and Acronyms, Resource Recycling Inc , 1995)
Measurement unit for heat It is the amount of energy required to raise the temperature of one pound of water one degree from 62 to 63 degrees Fahrenheit One Btu is equal to 252 calories and to 1055 joules
The standard unit for measuring quantity of heat energy It is the amount of heat energy necessary to raise the temperature of one pound of water one degree Fahrenheit
The most basic energy measurement unit of all fuels, defined as the amount of heat required to raise the temperature of one pound of water one degree Fahrenheit
(BTU) A standard unit for measuring the quantity of heat needed to raise the temperature of 1 pound of water by 1 degree Fahrenheit at or near 39 2 degrees Fahrenheit
(BTU)-a unit of heat used to describe the capacity of boilers and furnaces One BTU equals the amount of heat required to raise the temperature of one pound of water one degree Farenheit at sea level
(BTU) (heat) (meas) The amount of heat required to raise the temperature of one pound of water one degree FAHRENHEIT under stated conditions of temperature and pressure (e g sea level) In the Imperial system of measurements (as compared to the International System, SI, of measurements) it is the standard unit for measuring quantity of HEAT ENERGY One Btu is about equal to the heat released from burning one kitchen match It is also equal to 1,055 joules, the SI unit of measurement Generally abbreviated as Btu F - British thermal unit S - unidad termica britanica
One British thermal unit, or Btu, is roughly equivalent to burning one kitchen match The standard of measurement used for measuring the amount of heat required to raise the temperature of one pound of water by one degree (Fahrenheit) That may not sound like much, but a typical home consumes about 100 million Btus per year Approximately one-half for the total is used for space heating
These detectors, used primarily by large commercial or industrial firms, sound only when the temperature rises to a certain level They are not nearly as safe as the ionization and photoelectric types in that the fire must be more intense before the thermal unit will sound
Thermal clothes are specially designed to keep you warm in cold weather. My feet were like blocks of ice despite the thermal socks Thermals are thermal clothes. Have you got your thermals on?
A thermal is a movement of rising warm air. Birds use thermals to lift them through the air. thermal junction thermal spring thermal conduction thermal energy thermal expansion thermal radiation
rising current of warm air caused by or designed to retain heat; "a thermal burn"; "thermal underwear" of or relating to hot a hot spring; "thermal water" relating to or associated with heat; "thermal movements of molecules"; "thermal capacity"; "thermic energy"; "the caloric effect of sunlight
1) Refers to heating and cooling characteristics of building structures 2) Refers to a type of electric generating station or power plant, such as coal and nuclear plants, in which the source of energy for the prime mover is heat
A mass of rising air That's where we go to fuel and gain altitude The best place is to be right in the center Pilots obey rules of the road when flying in a thermal together
Rising bubble of warm air the top of which is usually depicted by a fair weather cumulus cloud Manna to soaring pilots Often found over ROUND-OUT CAFE or if you can stand the bouquet, the pig farm!
Material used in conjunction with polyurethane foam that is designed to inhibit the rise in temperature of the foam during a fire in order to delay the foams involvement in the fire Time ratings for thermal barriers should exceed 15 minutes
a material applied over polyurethane foam designed to slow the temperature rise of the foam during a fire and delay its involvement in the fire Thermal barriers for use with SPF must have a time rating of not less than 15 minutes
Transfer of heat energy resulting from differences in temperature between adjacent bodies or adjacent parts of a body. In the absence of a heat pump, the energy will flow from a region of higher temperature to a region of lower temperature. The transfer of energy occurs as a result of collision among the particles of the matter involved. The rate of transfer of energy is proportional to the cross-sectional area of contact and to the difference in temperature between the two regions. A substance of high thermal conductivity, such as copper, is a good thermal conductor; one with low thermal conductivity, such as wood, is a poor thermal conductor. See also convection, radiation
A method used to induce stresses on electrical components by means of sequential heating and cooling in an oven It is used in accelerated reliability testing
Internal energy of a system in thermodynamic equilibrium (see thermodynamics) by virtue of its temperature. A hot body has more thermal energy than a similar cold body, but a large tub of cold water may have more thermal energy than a cup of boiling water. Thermal energy can be transferred from one body, usually hotter, to a second body, usually colder, in three ways: conduction (see thermal conduction), convection, and radiation
An increase in size due to an increase in temperature expressed in units of an increase in length or increase in size per degree, i e inches/inch/degree C
an increase in size due to an increase in temperature expressed in units of an increase in length or increase in size per degree, i e , inches/inch/degree C
Increase in volume of a material as its temperature is increased, usually expressed as a fractional change in dimensions per unit temperature change. When the material is a solid, thermal expansion is usually described in terms of change in length, height, or thickness. If a crystalline solid has the same structural configuration throughout, the expansion will be uniform in all dimensions. Otherwise, there may be different expansion coefficients and the solid will change shape as the temperature increases. If the material is a fluid, it is more useful to describe the expansion in terms of a change in volume. Because the bonding forces among atoms and molecules vary from material to material, expansion coefficients are characteristic of elements and compounds
The increase in size of a material due to temperature increase The coefficient of thermal expansion indicates the linear expansion of a material with increasing temperature, expressed in units of inch per inch per degrees C or F Values for common plastics range from 0 00001 to 0 0002 in/in/degrees C This is measured using ASTM D696
A device that detects explosives by sensing gamma radiation given off when nitrogen in the explosive is bombarded with and absorbs low-energy neutrons. It is used, for example, for bomb detection in airports
Process by which energy is emitted by a warm surface. The energy is electromagnetic radiation and so travels at the speed of light and does not require a medium to carry it. Thermal radiation ranges in frequency from infrared rays through visible light to ultraviolet rays. The intensity and frequency distribution of the emitted rays are determined by the nature and temperature of the emitting surface; in general, the hotter the object, the shorter the wavelength. A hotter object is a better emitter than a cooler one, and a blackened surface is a better emitter than a silvered one. An example of thermal radiation is the heating of the Earth by the Sun
A reactor in which the fission chain reaction is sustained primarily by slow neutrons, and hence requiring a moderator (as distinct from Fast Neutron Reactor)
It is polymers thermal characteristic It is the time interval for which polymer remains stable at certain temperature Beyond that time if the polymer is exposed to longer duration for a given temperature, it degrades