e-dating

تعريف e-dating في الإنجليزية الإنجليزية القاموس.: The Internet equivalent of a date; the process of getting to know someone via instant messages or other computerized communication
He dating: Helium dating
carbon dating: Radiocarbon dating
dating: A form of romantic courtship between two individuals who may or may not expect marriage
It was a couple of years before he even started dating again.
dating: Present participle of date
dating: The process of estimating the age of an artifact or biological vestige
dating agency: A business providing a service for people to meet each other for romantic purposes
double dating: Present participle of double date
fluorine absorption dating: a technique used to date bones by measuring the amount of fluorine absorbed from the surrounding soil
fluorine dating: A technique used to date bones by measuring the amount of fluorine absorbed from the surrounding soil
helium dating: a method of determining the age of rock that depends on the production of helium during the decay of various radioactive isotopes of uranium and thorium
potassium-argon dating: A method of estimating the age of igneous rocks or of archaeological objects by measuring the amount of argon that has built up through the radioactive decay of potassium
radioactive dating: A method of determining the age of objects or material using the decay rates of radioactive components such as potassium-argon
radioactive dating: An instance of so doing
radiocarbon dating: A method of estimating the age of an artifact or biological vestige based on the relative amounts of the different isotopes of carbon present in a sample
radiometric dating: Alternative form of radioactive dating
read dating: An organized event in which prospective partners meet each other in a library through a series of one-to-one meetings
relative dating: A method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock
relative dating: An act of so doing
speed dating: An organized event in which prospective romantic partners meet each other through a series of short one-to-one meetings
speed-dating: Alternative spelling of speed dating
dating agency: 'dating .service a business that helps people to meet other people in order to have a romantic relationship
online dating agency: A Net dating service, also known as online dating or Internet dating, is an example of a dating system and allows individuals, couples and groups to meet online and possibly develop a romantic or sexual relationship. Net dating services provide un-moderated matchmaking through the use of personal computers, the Internet, or even cell phones
speed dating: An organized social activity in which people have a series of short conversations with potential partners in order to determine whether there is mutual interest
carbon dating: Carbon dating is a system of calculating the age of a very old object by measuring the amount of radioactive carbon it contains. a method of finding out the age of very old objects by measuring the amount of carbon in them
carbon-14 dating: or radiocarbon dating Method of determining the age of once-living material, developed by U.S. physicist Willard Libby in 1947. It depends on the decay of the radioactive isotope carbon-14 (radiocarbon) to nitrogen. All living plants and animals continually take in carbon: green plants absorb it in the form of carbon dioxide from the atmosphere, and it is passed to animals through the food chain. Some of this carbon is radioactive carbon-14, which slowly decays to the stable isotope nitrogen-14. When an organism dies it stops taking in carbon, so the amount of carbon-14 in its tissues steadily decreases. Because carbon-14 decays at a constant rate, the time since an organism died can be estimated by measuring the amount of radiocarbon in its remains. The method is a useful technique for dating fossils and archaeological specimens from 500 to 50,000 years old and is widely used by geologists, anthropologists, and archaeologists
dating: Specifying when you made an observation, since everything changes over time (See 92)
dating: Credit extension beyond normal terms of a credit supplier
dating: The process of estimating an objects relative age, or more absolute age by radio dating
dating: Present participle of to date
dating: The process of socializing and spending time with a variety of people for the purpose of having fun The practice of dating one person at a time for the purpose of testing if a relationship would work we refer to as "serial monogamy" or the "mini-marriage" Typically, the sole criterion for dating someone is that they are attractive and willing The difference for someone who is ready for a committed relationship and seeking their Life Partner is that they will consciously sort and screen prospects until they find a high-likelihood candidate, then enter a "pre-committed" relationship
dating: There are a great many techniques for determining the age and date of an archaeological find Some are relative relative dating techniques, deriving the age of a find from relative to that of similar objects or standards, others are absolute dating techniques, deriving the age (in years) of a find by a method with depends upon only the find itself The King Lists of Egypt go back to around 3100 BC
dating: use of chemical analysis to estimate the age of geological specimens
dating: Figuring out the age of things; determining dates
dating: n social activity only dreamed of by many male Tech studentsSee: Free Time, ShaftSee also: T-book: Social Life
dating: Dating agencies or services are for people who are trying to find a girlfriend or boyfriend. I joined a dating agency. In geology and archaeology, the process of determining an object's or event's place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or a presumed evolution in form or structure, or absolute dating, in which items are assigned a date independent of context. The latter type includes potassium-argon and carbon-14 dating; both are based on the measurement of radioactive decay. The record of changes in polarity of the Earth's magnetic field has provided a timescale for seafloor spreading and long-term marine sedimentation. Dendrochronology has proved useful in archaeology and climatology. See also fission-track dating; helium dating; lead-210 dating; rubidium-strontium dating; uranium-234-uranium-238 dating; uranium-thorium-lead dating. carbon 14 dating radiocarbon dating fission track dating helium dating lead 210 dating potassium argon dating rubidium strontium dating uranium 234 uranium-238 dating uranium thorium lead dating common lead dating
fission-track dating: Method of determining the age of a mineral that utilizes the damage done by the spontaneous fission of uranium-238, the most abundant isotope of uranium. The fission results in radiation damage, or fission tracks, that can be made visible by preferential leaching (removal of material by solution) of the host substance with a suitable chemical reagent; the leaching process allows the etched fission-track pits to be viewed and counted under a microscope. The amount of uranium present can be determined by irradiation that produces thermal fission of uranium-235, which produces another population of tracks, related to the uranium concentration of the mineral. Thus, the ratio of naturally produced, spontaneous fission tracks to induced fission tracks is a measure of the age of the sample. See also dating
helium dating: Method of dating that depends on the production of helium during the decay of radioactive isotopes of uranium and thorium. Because of this decay, the helium content of any mineral or rock capable of retaining helium will increase during the lifetime of that mineral or rock, and the ratio of helium to its radioactive progenitors then becomes a measure of geologic time. Fossils may also be dated by helium dating. The relatively large amount of helium produced in rocks may make it possible to extend helium dating to rocks and minerals as young as a few tens of thousands of years old
lead-210 dating: Method of dating that makes use of the ratio of the amount of the radioactive isotope lead-210 to that of the stable isotope lead-206. The method has been applied to the ores of uranium. Lead-210 dating is particularly useful for determining the ages of relatively recent marine sediments and so has been applied to studies concerned with the impact of human activity on the aquatic environment
potassium-argon dating: Method for determining the age of igneous rocks based on the amount of argon-40 in the rock. Radioactive potassium-40 decays to argon-40 with a half-life of about 1.3 billion years, making this method useful for dating rocks that are billions of years old. A more sophisticated method, called argon-argon dating, provides a more accurate estimate of the original potassium-40 content by means of the ratio of argon-40 to argon-39 in the rock, thus yielding a more accurate age determination. See also dating
potassium-argon dating: geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon
radioactive dating: a scientific method of calculating the age of a very old object by measuring the amount of a certain substance in it British Equivalent: carbon dating
radioactive dating: measurement of the amount of radioactive material (usually carbon 14) that an object contains; can be used to estimate the age of the object
radiocarbon dating: a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years
radiocarbon dating: The determination of the approximate age of an ancient object, such as an archaeological specimen, by measuring the amount of carbon 14 it contains. Also called carbon dating, carbon-14 dating. carbon dating
rubidium-strontium dating: Method of estimating the age of rocks, minerals, and meteorites from measurements of the amount of the stable isotope strontium-87 formed by the decay of the unstable isotope rubidium-87 that was present in the rock at the time of its formation. The method is applicable to very old rocks because the transformation is extremely slow: the half-life, or time required for half the initial quantity of rubidium-87 to disappear, is approximately 48.8 billion years. See also dating
rubidium-strontium dating: geological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years
uranium-234-uranium-238 dating: Method of age determination that makes use of the radioactive decay of uranium-238 to uranium-234; the method can be used for dating sediments from either a marine or a playa lake environment. Because this method is useful for the period 100,000-1.2 million years before the present, it helps in bridging the gap between the carbon-14 dating method and the potassium-argon dating method
uranium-thorium-lead dating: or common-lead dating Method of dating very old rocks by means of the amount of common lead they contain. Common lead is any lead from a rock or mineral that contains a large amount of lead and a small amount of the radioactive precursors of lead (i.e., the isotopes uranium-235, uranium-238, and thorium-232). By this method, the age of the Earth has been estimated to be 4.6 billion years. This figure is in good agreement with the age of meteorites and the age of the Moon as determined independently