- helium method
- <tech.gen> ■ Heliummethode f
English-german technical dictionary. 2013.
helium method
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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… … Universalium
Helium atom scattering — (HAS) is a surface analysis technique used in materials science. HAS provides information about the surface structure and lattice dynamics of a material by measuring the diffracted atoms from a monochromatic helium beam incident on the sample.… … Wikipedia
Helium (disambiguation) — Helium, in science and astronomy, may refer to:*Helium, chemical element **Helium 3, an isotope of helium **Helium 4, an isotope of helium *Helium dating, a method of determining the age of rocks *Helium fusion, a type of nuclear fusion in stars… … Wikipedia
Helium-3 propulsion — is a proposed method of spacecraft propulsion that uses the fusion of helium 3 atoms as a power source. Helium 3, an isotope of helium with two protons and one neutron, could be fused with deuterium in a reactor. The resulting energy release… … Wikipedia
Helium dating — is a method of determining the age of a substance using the decay of radioactive isotopes … Wikipedia
Helium mass spectrometer — A helium mass spectrometer is an instrument commonly used to detect and locate small leaks. It was initially developed in the Manhattan Project during World War II to find extremely small leaks in the gas diffusion process of uranium enrichment… … Wikipedia
Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… … Wikipedia
helium dating — noun 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. Syn: He dating … Wiktionary
Tracer-gas leak testing method — As part of the recommended leak testing methods for nondestructive testing several tracer gas leak testing ones exist among which the methods of choice are: * Helium mass spectrometer or helium leak detection, providing the highest sensitivity *… … Wikipedia
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Age of the Earth — This article is about scientific estimates of the age of the Earth. For religious and other non scientific estimates, see Dating Creation. Earth as seen from Apollo 17 The age of the Earth is 4.54 billion years (4.54 × 109 years ± 1%) … Wikipedia
