atomic clock encyclopedia

Atomic - Wikipedia

Atomic may refer to: . Of or relating to the atom, the smallest particle of a chemical element that retains its chemical properties; Atomic physics, the study of the atom; Atomic Age, also known as the "Atomic Era"; Atomic scale, distances comparable to the dimensions of an atom; Atom (order theory), in mathematics Atomic (cocktail), a champagne cocktail Atomic, an Australian computing and ...

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Measurement Of Time | Encyclopedia

May 08, 2018· Time, Measurement of The history of time measurement is the story of the search for more consistent and accurate ways to measure time. Early human groups recorded the phases of the Moon some 30,000 years ago, but the first minutes were counted accurately only 400 years ago.

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Atom - Wikipedia

Atom: Ilustrație a atomului de heliu, reprezentând nucleul atomic (roz) și distribuția norului electronic (negru). Nucleul (dreapta-sus) de heliu-4 prezintă în realitate simetrie sferică și se aseamănă cu norul electronic, dar aceasta nu se întâmplă și pentru nuclee mai complicate.

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Godzilla | Wikizilla, the kaiju encyclopedia

May 07, 2021· In the original 1954 Godzilla, it is proposed that Godzilla was a type of prehistoric intermediary reptile related to both land and sea reptiles that slept deep underwater for millions of years feeding on deep-sea organisms before being disturbed and enhanced by an American hydrogen bomb test. Dr. Yamane proposes that the original Godzilla might have been living among others of his kind …

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Atomic clock - Wikipedia

An atomic clock is a clock whose timekeeping mechanism is based on the interaction of electromagnetic radiation with the excited states of certain atoms.Specifically, either a hyperfine transition in the microwave, or electron transition in the optical or ultraviolet region of the emission spectrum of an atom is used as a frequency standard for the timekeeping element.

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Potassium - Wikipedia

Potassium is a chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. It was first isolated from potash, the ashes of plants, from which its name derives.

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Manhattan Project - Encyclopedia Britannica | Britannica

Manhattan Project, U.S. government research project (1942–45) that produced the first atomic bombs. The project''s name was derived from the location of Columbia University, where much of the early research was done. The first bomb was exploded in a test at Alamogordo air base in southern New Mexico on July 16, 1945.

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Encyclopedia Index: A-Z | PCMag

The PCMag Encyclopedia contains definitions on common technical and computer-related terms.

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gamma ray | Definition & Applications | Britannica

Gamma rays are produced in the disintegration of radioactive atomic nuclei and in the decay of certain subatomic particles.The commonly accepted definitions of the gamma-ray and X-ray regions of the electromagnetic spectrum include some wavelength overlap, with gamma-ray radiation having wavelengths that are generally shorter than a few tenths of an angstrom (10 −10 metre) and gamma-ray ...

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Atomic - definition of atomic by The Free Dictionary

Define atomic. atomic synonyms, atomic pronunciation, atomic translation, English dictionary definition of atomic. adj. 1. Of or relating to an atom or atoms. 2.

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