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searching for Radioactive decay 163 found (682 total)

alternate case: radioactive decay

Argon–argon dating (1,070 words) [view diff] exact match in snippet view article find links to article

40Ar* refers to the radiogenic 40Ar, i.e. the 40Ar produced from radioactive decay of 40K. 40Ar* does not include atmospheric argon adsorbed to the surface
K–Ar dating (1,874 words) [view diff] exact match in snippet view article find links to article
and archaeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium (K) into argon (Ar). Potassium is a common
Forbidden mechanism (1,837 words) [view diff] exact match in snippet view article find links to article
less than a microsecond for decay via permitted transitions. In some radioactive decay systems, multiple levels of forbiddenness can stretch life times by
Secular equilibrium (438 words) [view diff] exact match in snippet view article find links to article
equal to its decay rate. Secular equilibrium can only occur in a radioactive decay chain if the half-life of the daughter radionuclide B is much shorter
Absolute dating (1,653 words) [view diff] exact match in snippet view article find links to article
geology, the primary methods of absolute dating involve using the radioactive decay of elements trapped in rocks or minerals, including isotope systems
Gamma Ray (song) (433 words) [view diff] exact match in snippet view article
title refers to gamma rays, biologically hazardous energy emitted by radioactive decay. Despite its up-tempo beat, the song lyrics invoke nihilistic or apocalyptic
Iron peak (347 words) [view diff] exact match in snippet view article find links to article
supernova due to explosive oxygen and silicon fusion, followed by radioactive decay of nuclei such as Nickel-56. On average, heavier elements are less
Polar wind (334 words) [view diff] exact match in snippet view article find links to article
fact that helium in the Earth's atmosphere seems to be produced (via radioactive decay of uranium and thorium) faster than it is lost by escaping from the
Positron (2,907 words) [view diff] exact match in snippet view article find links to article
two or more photons. Positrons can be created by positron emission radioactive decay (through weak interactions), or by pair production from a sufficiently
Mineral alteration (640 words) [view diff] exact match in snippet view article find links to article
pressure and high temperature environment. A common example of a radioactive decay alteration is when a radioactive element bearing zircon or allanite
Uranium–uranium dating (424 words) [view diff] exact match in snippet view article find links to article
one of several radiometric dating techniques exploiting the uranium radioactive decay series, in which 238U undergoes 14 alpha and beta decay events on
Radioligand (736 words) [view diff] exact match in snippet view article find links to article
radioligand is displaced from the binding site and the increasing radioactive decay can be measured by scintillography. This assay is commonly used to
Ronald Wilfred Gurney (363 words) [view diff] no match in snippet view article find links to article
Ronald Wilfred (or Wilfrid) Gurney (1898, in Cheltenham, England – 14 April 1953, in New York, New York) was a British theoretical physicist and research
Convergent boundary (1,951 words) [view diff] exact match in snippet view article find links to article
the mantle. Convection cells are the result of heat generated by radioactive decay of elements in the mantle escaping to the surface and the return of
Q value (nuclear science) (749 words) [view diff] exact match in snippet view article
value relates to the enthalpy of a chemical reaction or the energy of radioactive decay products. It can be determined from the masses of reactants and products
Siegbahn notation (1,033 words) [view diff] exact match in snippet view article find links to article
particles as in PIXE, by other X-rays in X-ray fluorescence or by radioactive decay of the atom's nucleus. Although still widely used in spectroscopy
Software rot (1,137 words) [view diff] exact match in snippet view article find links to article
is almost as if the bits that make up the program were subject to radioactive decay. Several factors are responsible for software rot, including changes
Bertram Boltwood (290 words) [view diff] exact match in snippet view article find links to article
of ages of 400 to 2200 million years, the first successful use of radioactive decay by Pb/U chemical dating (isotopes not discovered yet). More recently
Advanced Stirling radioisotope generator (1,228 words) [view diff] no match in snippet view article find links to article
Center. It uses a Stirling power conversion technology to convert radioactive-decay heat into electricity for use on spacecraft. The energy conversion
Carbon group (3,604 words) [view diff] exact match in snippet view article find links to article
of radioactive decay of actinides, and via spallation in the upper atmosphere. Silicon-34 also occurs naturally as the result of radioactive decay of
Green Run (632 words) [view diff] exact match in snippet view article find links to article
producing the fissile plutonium-239. Due to other unwanted highly radioactive decay products being formed, normal batch processing would take place 83
Uranium acid mine drainage (1,323 words) [view diff] exact match in snippet view article find links to article
uranium radionuclides into the environment, which can undergo further radioactive decay while lowering the pH of a solution (Figure 1). Uranium may exist
Working level (200 words) [view diff] exact match in snippet view article find links to article
Working level (WL) is a historical unit of concentration of radioactive decay products of radon, applied to uranium mining environment. One working level
Decay correction (802 words) [view diff] exact match in snippet view article find links to article
Decay correction is a method of estimating the amount of radioactive decay at some set time before it was actually measured. Researchers often want to
Continent of stability (748 words) [view diff] exact match in snippet view article find links to article
nuclides with masses greater than 300 Daltons that is stable against radioactive decay, consisting of freely flowing up quarks and down quarks rather than
Actinide (10,525 words) [view diff] exact match in snippet view article find links to article
intermediate position. All actinides are radioactive and release energy upon radioactive decay; naturally occurring uranium and thorium, and synthetically produced
Ionization (5,861 words) [view diff] exact match in snippet view article find links to article
result in the formation of ion pairs. Ionization can occur through radioactive decay by the internal conversion process, in which an excited nucleus transfers
Henryk Bem (241 words) [view diff] exact match in snippet view article find links to article
samples as well as the impact of technical activities on natural radioactive decay level and additional degree of radiation hazard. He is the author
Auger therapy (1,338 words) [view diff] exact match in snippet view article find links to article
one (or more) heavy atoms capable of emitting Auger electrons by radioactive decay or external excitation. The electron energy in a vacuum may be accurately
Europa (moon) (10,093 words) [view diff] exact match in snippet view article
Europa, like the Earth, may possess an internal energy source from radioactive decay, the energy generated by tidal flexing would be several orders of
PET radiotracer (274 words) [view diff] exact match in snippet view article find links to article
radioligand is displaced from the binding site and the increasing radioactive decay can be measured by scintillography. This assay is commonly used to
Partial melting (603 words) [view diff] exact match in snippet view article find links to article
for mantle melting, as it would take over 10 million years for the radioactive decay of K, U and Th to increase the temperature of peridotite by 1 degree
Ionized-air glow (1,447 words) [view diff] exact match in snippet view article find links to article
alpha particles, beta particles, positrons (which all come from the radioactive decay of unstable daughter products of the fission reaction) and energetic
Flyby of Io with Repeat Encounters (456 words) [view diff] no match in snippet view article find links to article
Center. It uses a Stirling power conversion technology to convert radioactive-decay heat into electricity for use on spacecraft. Atmosphere of Io Io Volcano
Timothy Beers (805 words) [view diff] exact match in snippet view article find links to article
with measured abundances of Uranium, enabling the determination of a radioactive decay age limit on the Universe, (2) a class of stars known as carbon-enhanced
Hosur Narasimhaiah (2,356 words) [view diff] case mismatch in snippet view article find links to article
physics from the Ohio State University in 1960. His thesis was The Radioactive Decay of Hafnium and Thulium Isotopes. From 1961 to 1972 he was Principal
Stephanie Horovitz (535 words) [view diff] exact match in snippet view article find links to article
development in radiochemistry. It predicted that lead resulting from the radioactive decay of uranium or thorium would have different atomic weights than typical
National Atmospheric Release Advisory Center (536 words) [view diff] exact match in snippet view article find links to article
simulating the processes of mean wind advection, turbulent diffusion, radioactive decay and production, bio-agent degradation, first-order chemical reactions
Oskar Klein (407 words) [view diff] exact match in snippet view article find links to article
proposed a boson-exchange model for charge-charging weak interactions (radioactive decay), a few years after a similar proposal by Hideki Yukawa. His model
Common beta emitters (583 words) [view diff] exact match in snippet view article find links to article
thermoelectric generator power packs. These use heat produced by radioactive decay of strontium-90 to generate heat, which can be converted to electricity
Boltysh crater (932 words) [view diff] exact match in snippet view article find links to article
to derive an age of 65.04 ± 1.10 million years. Analysis of argon radioactive decay products yielded an age of 65.17 ± 0.64 million years. These ages
Lead–lead dating (1,702 words) [view diff] exact match in snippet view article find links to article
There are three stable "daughter" Pb isotopes that result from the radioactive decay of uranium and thorium in nature; they are 206Pb, 207Pb, and 208Pb
Strontium-90 (1,408 words) [view diff] exact match in snippet view article find links to article
hyperparathyroidism could be explained by binding of strontium-90. The radioactive decay of strontium-90 generates a significant amount of heat, 0.536 W/g
SF (461 words) [view diff] exact match in snippet view article find links to article
system beyond expected or actual loads Spontaneous fission, a form of radioactive decay found in very heavy elements Stacking fault, a dislocation in a crystal
Daughter (disambiguation) (200 words) [view diff] exact match in snippet view article
from cell division Daughter isotope, in physics, a nuclide formed by radioactive decay of another Daughter language, in linguistics, any later language derived
Alastair G. W. Cameron (1,706 words) [view diff] exact match in snippet view article find links to article
has no stable isotopes, the observed technetium would experience radioactive decay with half-life of about 200,000 years, which was much shorter than
Positron (disambiguation) (69 words) [view diff] exact match in snippet view article
Positron, a bicycle shifting system from Shimano Positron emission, the radioactive decay Positronic brain, the fictional device conceived by Isaac Asimov
John Walker (programmer) (804 words) [view diff] exact match in snippet view article
html Walker, John. "HotBits: Genuine random numbers, generated by radioactive decay". fourmilab.ch. Retrieved March 30, 2006. Walker, John. "Earth and
Radiation (disambiguation) (405 words) [view diff] exact match in snippet view article
ionizing radiation, that emanates from nuclear processes such as radioactive decay Acoustic radiation, which takes the form of mechanical waves in a
Suess effect (912 words) [view diff] exact match in snippet view article find links to article
exchanging carbon with the atmosphere, and thus no longer take up new 14C. Radioactive decay then gradually depletes the 14C in the organism. This effect is the
Halogen (5,154 words) [view diff] exact match in snippet view article find links to article
radioactive isotope iodine-129, which occurs via spallation and from the radioactive decay of uranium in ores. Several other radioactive isotopes of iodine have
Gwen Fenton (427 words) [view diff] exact match in snippet view article find links to article
resulted in the development of a technique to age fish based on the radioactive decay of radium-226 to lead-210. This revolutionized the understanding of
Alpha nuclide (246 words) [view diff] exact match in snippet view article find links to article
Alpha number nuclide Stable/radioactive decay mode half-life product(s) of decay (bold is stable) notes 1 4 2He Stable 2 8 4Be Radioactive α 8.19(37)×10−17 s
Lunar Prospector (3,464 words) [view diff] exact match in snippet view article find links to article
was designed to record the spectrum of gamma rays emitted by: the radioactive decay of elements contained in the Moon's crust; and elements in the crust
Berkeley Nuclear Power Station (828 words) [view diff] exact match in snippet view article find links to article
nuclear reactor structures, scheduled to commence in 2026, until radioactive decay means that they can be demolished and the site completely cleared
Helium hydride ion (2,965 words) [view diff] exact match in snippet view article find links to article
three protons and two electrons. The first three are generated by radioactive decay of tritium in the molecules HT = 1 H3 H, DT = 2 H3 H, and T 2 = 3
Nuclear chemistry (4,791 words) [view diff] exact match in snippet view article find links to article
treatment Ernest Rutherford, working in Canada and England, showed that radioactive decay can be described by a simple equation (a linear first degree derivative
Neutron temperature (1,224 words) [view diff] exact match in snippet view article find links to article
"fast" even by the 1 MeV criterion. Spontaneous fission is a type of radioactive decay that some heavy elements undergo. Examples include plutonium-240 and
Krypton-85 (1,264 words) [view diff] exact match in snippet view article find links to article
The global inventory noted above is smaller than this amount due to radioactive decay; a smaller fraction is dissolved into the deep oceans. Other man-made
Fact (2,484 words) [view diff] exact match in snippet view article find links to article
based on radiometric dating, which is justified by reasoning that radioactive decay follows a Poisson process rather than a Bernoulli process. Similarly
Mass–energy equivalence (13,812 words) [view diff] exact match in snippet view article find links to article
equation is in no way an explanation of the large energies released in radioactive decay (this comes from the powerful nuclear forces involved; forces that
Homosphere (539 words) [view diff] exact match in snippet view article find links to article
industry, and transportation), natural gas fields, radon produced by radioactive decay in certain minerals, volcanic gas, emissions from limnic eruptions
John Clayton Taylor (514 words) [view diff] exact match in snippet view article find links to article
integrals for processes in quantum field theory, the PCAC nature of radioactive decay of the pion and the discovery in 1971 of the so-called Slavnov–Taylor
Cherenkov luminescence imaging (336 words) [view diff] exact match in snippet view article find links to article
Jan (2013). "Quantitative imaging of disease signatures through radioactive decay signal conversion". Nature Medicine. 19 (10): 1345–50. doi:10.1038/nm
Iron meteorite (1,999 words) [view diff] exact match in snippet view article find links to article
asteroids that have been shattered by impacts. The heat released from the radioactive decay of the short-lived nuclides 26Al and 60Fe is considered as a plausible
Early Cambrian geochemical fluctuations (630 words) [view diff] exact match in snippet view article find links to article
than heavy 13C. Other isotopes are only produced as a result of the radioactive decay of other elements, such as 87Sr, the daughter isotope of 87Rb. Rb
Soviet submarine K-431 (803 words) [view diff] exact match in snippet view article find links to article
source suggests that the total release was about 259 PBq but due to radioactive decay this decreased to 43 TBq after 24 hours. The same source suggests
Uranium–lead dating (1,205 words) [view diff] exact match in snippet view article find links to article
lower intercept ages. Undamaged zircon retains the lead generated by radioactive decay of uranium and thorium up to very high temperatures (about 900 °C)
Nuclear Power Demonstration (750 words) [view diff] exact match in snippet view article find links to article
contaminated equipment on site for some decades yet to allow for further radioactive decay. The site was commemorated by a historical plaque detailing the operational
Presence (Marvel Comics) (1,351 words) [view diff] exact match in snippet view article
flight at near-warp speed through air or outer space. He subsists on radioactive decay, and hence does not require food, water, or oxygen. He possesses telepathic
Advanced Combat Optical Gunsight (1,356 words) [view diff] exact match in snippet view article find links to article
being designed to use internal phosphor illumination provided by the radioactive decay of tritium. The tritium illumination has a usable life of 10–15 years
Sam Ruben (834 words) [view diff] exact match in snippet view article find links to article
hindered by the difficulty measuring the weak beta emission of the radioactive decay and by the onset of World War II that shut off production of the isotope
H. G. Wells (12,050 words) [view diff] exact match in snippet view article find links to article
Tono-Bungay is not a science-fiction novel, radioactive decay plays a small but consequential role in it. Radioactive decay plays a much larger role in The World
Ronen's golden rule for cluster radioactivity (145 words) [view diff] exact match in snippet view article find links to article
208Pb. 1. ^Tavares, O.A.P., Roberto, L.A.M. and Medeiros, E.L., "Radioactive decay by the emission of heavy nuclear fragments". Phys. Scr. 76, 376, (2007)
Apatite (2,411 words) [view diff] exact match in snippet view article find links to article
tailings. However, apatite often contains uranium and its equally radioactive decay-chain nuclides. Apatite is an ore mineral at the Hoidas Lake rare-earth
Equatorial ridge on Iapetus (785 words) [view diff] exact match in snippet view article find links to article
current tidally locked 79 days, Iapetus must have been heated by the radioactive decay of aluminium-26. This isotope appears to have been abundant in the
Reticle (1,626 words) [view diff] exact match in snippet view article find links to article
light conditions, by a battery powered LED. Some sights also use the radioactive decay of tritium for illumination that can work for 11 years without using
List of Superfund sites in Utah (492 words) [view diff] exact match in snippet view article find links to article
radioactive dust and tailings from the Minticello Mill, and radon from radioactive decay. 10/15/1989 06/10/1986 09/02/1999 – 02/28/2000 UTD980951420 Murray
Galaxy Song (1,614 words) [view diff] exact match in snippet view article find links to article
original planet formation and 80% of which is derived from ongoing radioactive decay. The second source is the Moon's effects on tides and the associated
Sodium pertechnetate (1,502 words) [view diff] exact match in snippet view article find links to article
99MoO42− is retained on the column, where it continues to undergo radioactive decay, while the medically useful radioisotope 99mTcO4− is eluted in the
Radiolysis (1,491 words) [view diff] exact match in snippet view article find links to article
rate that could be obtained by utilizing the energy liberated via radioactive decay. Based on the primary molecular hydrogen yield of 0.45 molecules/100
Theodore William Richards (1,193 words) [view diff] exact match in snippet view article find links to article
analyze samples of naturally occurring lead and lead produced by radioactive decay. His measurements showed that the two samples had different atomic
Planetary equilibrium temperature (2,107 words) [view diff] exact match in snippet view article find links to article
be heated by tidal heating, geothermal energy which is driven by radioactive decay in the core of the planet, or accretional heating. These internal
SN 2014J (1,760 words) [view diff] exact match in snippet view article find links to article
which detected the gamma-ray spectral lines characteristic of the radioactive decay chain 56Ni→56Co→56Fe. This was the first time these lines were detected
Paleoceanography (1,639 words) [view diff] exact match in snippet view article find links to article
the last glacial period. 231Pa and 230Th are both formed from the radioactive decay of dissolved uranium in seawater, with 231Pa able to remain supported
Rhenium–osmium dating (1,010 words) [view diff] exact match in snippet view article find links to article
has weight percentages of CaO and Al2O3 ranging from 0 to 2%). The radioactive decay of 190Pt to 186Os has a half-life of 6.5(3)×1011 years (which is longer
Sustainable engineering (1,970 words) [view diff] exact match in snippet view article find links to article
take all these years for half of the radioactive isotopes to decay. Radioactive decay is the spontaneous transformation of one element into another. This
Stellar collision (1,827 words) [view diff] exact match in snippet view article find links to article
"Electromagnetic counterparts of compact object mergers powered by the radioactive decay of r-process nuclei". Monthly Notices of the Royal Astronomical Society
Radio-Activity (1,282 words) [view diff] exact match in snippet view article find links to article
quasars. "Radio Stars" segues into "Uranium", a composition about radioactive decay. It features a choral keyboard pad in the background, which was later
Structure of Earth (2,720 words) [view diff] exact match in snippet view article find links to article
primordial heat left over from the planet's formation as well as the radioactive decay of uranium, thorium, and potassium in Earth's crust and mantle. The
Pseudorandomness (1,374 words) [view diff] exact match in snippet view article find links to article
doi:10.1561/0400000010. HotBits: Genuine random numbers, generated by radioactive decay Using and Creating Cryptographic-Quality Random Numbers In RFC 1750
Harriet Brooks (1,381 words) [view diff] exact match in snippet view article find links to article
the determination that the elements undergo some transmutation in radioactive decay. Her research of radon and actinium was pioneering, and her brief
Thermal ionization mass spectrometry (1,050 words) [view diff] exact match in snippet view article find links to article
even higher precision of detecting the change of isotopic ratios by radioactive decay. The more precision means the higher resolution in age dating. Becker
Timeline of chemical element discoveries (2,980 words) [view diff] exact match in snippet view article find links to article
Rutherford and Owens discovered a radioactive gas resulting from the radioactive decay of thorium, isolated later by Ramsay and Gray. In 1900, Friedrich
Thomas Prince (scientist) (432 words) [view diff] exact match in snippet view article
Australian outback in the late 1980s to make balloon observations of the radioactive decay energy from Supernova 1987a. During the late 1980s and 1990s, Prince
Prompt neutron (1,093 words) [view diff] exact match in snippet view article find links to article
A subsequent fission fragment occasionally undergoes a stage of radioactive decay that yields an additional neutron, called a delayed neutron. These
Poisson point process (15,912 words) [view diff] exact match in snippet view article find links to article
independently and repeatedly in several settings, including experiments on radioactive decay, telephone call arrivals and insurance mathematics. The Poisson point
Second (3,023 words) [view diff] exact match in snippet view article find links to article
per second squared). The metric system unit becquerel, a measure of radioactive decay, is measured in inverse seconds. The meter is defined in terms of
Pair-instability supernova (1,976 words) [view diff] exact match in snippet view article find links to article
Collision between the exploding star core and gas it ejected earlier, and radioactive decay, release most of the visible light. A different reaction mechanism
Foundation's Friends (143 words) [view diff] exact match in snippet view article find links to article
shipments of the impossible plutonium-186, which emits positrons through radioactive decay; it is posited to originate from a parallel dimension and if unstopped
John Joly (1,052 words) [view diff] exact match in snippet view article find links to article
age. Working in collaboration with Sir Ernest Rutherford, he used radioactive decay in minerals to estimate, in 1913, that the beginning of the Devonian
Corium (nuclear reactor) (5,679 words) [view diff] exact match in snippet view article
heat production from radioactive decay drops quickly, as the short half-life isotopes provide most of the heat and radioactive decay, with the curve of
Quantum suicide and immortality (2,884 words) [view diff] exact match in snippet view article find links to article
weapon triggered by a two level system. Schrödinger described his as a radioactive decay detector while Moravec's was a device measuring the spin value of
Alpha particle X-ray spectrometer (1,135 words) [view diff] exact match in snippet view article find links to article
X-rays. Alpha particles, protons, and X-rays are emitted during the radioactive decay of unstable atoms. A common source of alpha particles is curium-244
Induced gamma emission (1,908 words) [view diff] exact match in snippet view article find links to article
difficulties arise from the need to ensure safety from the spontaneous radioactive decay of nuclear isomers in quantities sufficient for experimentation. Lifetimes
Tritium radioluminescence (1,646 words) [view diff] exact match in snippet view article find links to article
example of tritium use on a rifle sight. The electrons emitted by the radioactive decay of the tritium cause phosphor to glow, thus providing a long-lasting
National Emissions Standards for Hazardous Air Pollutants (705 words) [view diff] exact match in snippet view article find links to article
equal to 100 °C. ^5 A type of atom which spontaneously undergoes radioactive decay. Sources: USEPA's original list & Modifications Most air toxics originate
Arkaroola (1,521 words) [view diff] exact match in snippet view article find links to article
rocks contain elevated levels of uranium that gives off heat during radioactive decay. Water percolating through fractures in the rock is heated and bubbles
Nuclear fuel cycle (7,841 words) [view diff] exact match in snippet view article find links to article
an atom of the isotope U-239. This isotope then undergoes natural radioactive decay to yield Pu-239, which, like U-235, is a fissile isotope. The atoms
Ivy Mike (2,829 words) [view diff] exact match in snippet view article find links to article
the filters might also contain atoms that had transformed, through radioactive decay, into the predicted but undiscovered elements 99 and 100. Ghiorso
Superluminous supernova (2,556 words) [view diff] exact match in snippet view article find links to article
supernovae, they were also unlikely to be powered by the typical radioactive decay that is responsible for the observed energies of conventional supernovae
Young Earth creationism (9,312 words) [view diff] exact match in snippet view article find links to article
there was overwhelming evidence for over 500 million years' worth of radioactive decay, they claimed to have found other scientific evidence to prove a young
Crewed Mars rover (1,647 words) [view diff] exact match in snippet view article find links to article
with a slow decline over decades, with some of the heat given off by radioactive decay going to the production of electricity and a larger amount radiated
Nordenskjöld Coast (2,428 words) [view diff] exact match in snippet view article find links to article
Potassium-argon or K-Ar dating, which measures the product of the radioactive decay of an isotope to determine the time period, from the Schists that
External beam radiotherapy (2,080 words) [view diff] exact match in snippet view article find links to article
longer used clinically), or cobalt-60. Such photon beams, derived from radioactive decay, are more or less monochromatic and are properly termed gamma rays
Bubble fusion (3,335 words) [view diff] exact match in snippet view article find links to article
reaction and instead highly consistent with neutrons produced by the radioactive decay of Californium 252, an isotope commonly used as a laboratory neutron
John G. Cramer (765 words) [view diff] exact match in snippet view article find links to article
/ 03 March 2009 59–53 Inability of most to understand probability Radioactive decay and the Earth-Sun distance 129 / 05 May 2009 61–63 Is there a correlation
Heat-pipe tectonics (2,562 words) [view diff] exact match in snippet view article find links to article
40 times larger than that on Earth. Radioactive decay cannot generate this large amount of heat. Radioactive decay supplies heating on other terrestrial
Pilot Knob (Austin, Texas) (1,618 words) [view diff] exact match in snippet view article
potassium in a rock mineral and the amount of argon gas produced by radioactive decay trapped within the minerals, an age can be assigned to the rock because
Continental drift (4,783 words) [view diff] exact match in snippet view article find links to article
mantle contained convection cells which dissipated heat produced by radioactive decay and moved the crust at the surface. His Principles of Physical Geology
Photodiode (3,359 words) [view diff] exact match in snippet view article find links to article
1142/S0129156404002363. alpha particles emitted from the natural radioactive decay of uranium, thorium, and daughter isotopes present as impurities in
Thermochronology (1,557 words) [view diff] exact match in snippet view article find links to article
dating is concerned with determining the amount of the product of radioactive decay of isotopic potassium (40K) into its decay product of isotopic argon
Rocket engine (8,935 words) [view diff] exact match in snippet view article find links to article
Disadvantages Radioisotope rocket/"Poodle thruster" (radioactive decay energy) Heat from radioactive decay is used to heat hydrogen About 700–800 seconds,
Linguistic purism in English (1,550 words) [view diff] exact match in snippet view article find links to article
for 'oxygen'); coining (firststuff for 'element'; lightrotting for 'radioactive decay'). The first chapter of Alan Moore's 1996 novel Voice of the Fire
Formation evaluation gamma ray (1,158 words) [view diff] exact match in snippet view article find links to article
electromagnetic radiations emitted from an atomic nucleus during radioactive decay, with the wavelength in the range of 10−9 to 10−11cm Isotopes naturally
Apollo Lunar Surface Experiments Package (1,002 words) [view diff] exact match in snippet view article find links to article
was the power source for the ALSEP. It utilized the heat from the radioactive decay of plutonium-238 and thermocouples to generate approximately 70 watts
PSL (rifle) (2,249 words) [view diff] exact match in snippet view article
every 8–12 years, since it gradually loses its brightness due to radioactive decay. The LPS 4×6° TIP2 is issued with a lens hood that can be attached
Iapetus (moon) (3,959 words) [view diff] exact match in snippet view article
current tidally locked 79 days, Iapetus must have been heated by the radioactive decay of aluminium-26. This isotope appears to have been abundant in the
Mars Observer (2,271 words) [view diff] exact match in snippet view article find links to article
diagram Records the spectrum of gamma rays and neutrons emitted by the radioactive decay of elements contained in the Martian surface. Principal investigator:
Ocean (5,947 words) [view diff] exact match in snippet view article find links to article
differentiated bodies capable of supporting oceans, although models of radioactive decay suggest that Pluto, Eris, Sedna, and Orcus have oceans beneath solid
Randomness (3,888 words) [view diff] exact match in snippet view article find links to article
as interactive experiment. HotBits generates random numbers from radioactive decay. QRBG Quantum Random Bit Generator QRNG Fast Quantum Random Bit Generator
Calculus (7,081 words) [view diff] exact match in snippet view article find links to article
calculus. Chemistry also uses calculus in determining reaction rates and radioactive decay. In biology, population dynamics starts with reproduction and death
Commission on Isotopic Abundances and Atomic Weights (2,066 words) [view diff] exact match in snippet view article find links to article
exception attributed to lead isotopes being products of the natural radioactive decay chains of uranium. In 1930s, however, Malcolm Dole reported that the
Geothermal power (4,313 words) [view diff] exact match in snippet view article find links to article
surface by conduction at a rate of 44.2 TW and is replenished by radioactive decay at a rate of 30 TW. These power rates are more than double humanity's
Potential energy (6,036 words) [view diff] exact match in snippet view article find links to article
nuclear forces provide the potential energy for certain kinds of radioactive decay, such as beta decay. Nuclear particles like protons and neutrons are
Sustainable energy (7,689 words) [view diff] exact match in snippet view article find links to article
thermal energy created and stored within the earth. It arises from the radioactive decay of an isotope of potassium and other elements found in the Earth's
SN 2018cow (3,133 words) [view diff] exact match in snippet view article find links to article
what it is, but the normal powering mechanism for a supernova is radioactive decay of nickel, and this event is too bright and too fast for that." The
Zecharia Sitchin (3,448 words) [view diff] exact match in snippet view article find links to article
99% of its time beyond Pluto. Sitchin's explanation that heat from radioactive decay and a thick atmosphere keep Nibiru warm is absurd and does not address
Bateman equation (621 words) [view diff] case mismatch in snippet view article find links to article
title=Help%3ADecay_Engine%2B%2B Logan J. Harr. Precise Calculation of Complex Radioactive Decay Chains. M.Sc thesis Air Force Institute of Technology. 2007. http://www
Sanford Underground Research Facility (2,535 words) [view diff] exact match in snippet view article find links to article
the world. The Majorana experiment is searching for a rare type of radioactive decay called “neutrinoless double-beta decay.” If this phenomenon were detected
Big Bang nucleosynthesis (4,412 words) [view diff] exact match in snippet view article find links to article
abundances were nearly fixed, and the only changes were the result of the radioactive decay of the two major unstable products of BBN, tritium and beryllium-7
Fludeoxyglucose (18F) (2,421 words) [view diff] exact match in snippet view article
[18F]FDG enters the cell thus cannot move out of the cell before radioactive decay. As a result, the distribution of [18F]FDG is a good reflection of
Exit sign (2,493 words) [view diff] exact match in snippet view article find links to article
and have been used since the 1970s. Radio-luminescence uses the radioactive decay of tritium gas to illuminate the sign, while phosphorescence uses
Neutrino detector (3,526 words) [view diff] exact match in snippet view article find links to article
extracted and concentrated. Neutrinos were thus detected by measuring the radioactive decay of germanium. This latter method is nicknamed the "Alsace-Lorraine"
Health threat from cosmic rays (5,450 words) [view diff] exact match in snippet view article find links to article
is also attenuated by absorption in the atmosphere, as well as by radioactive decay in flight of some particles, such as muons. Particles entering from
Density matrix (5,199 words) [view diff] exact match in snippet view article find links to article
polarizations. A third way to generate unpolarized light uses an EPR setup: A radioactive decay can emit two photons traveling in opposite directions, in the quantum
Boron group (5,723 words) [view diff] case mismatch in snippet view article find links to article
R.; Ensor, D. D.; Fellow, R. L. (1981). "Chemical Consequences of Radioactive Decay. 2. Spectrophotometric Study of the Ingrowth of Berkelium-249 and
Investigations into the Fukushima Daiichi nuclear disaster (2,856 words) [view diff] exact match in snippet view article find links to article
from cutting power, the reactors overheated due to the normal high radioactive decay heat produced in the first few days after nuclear reactor shutdown
Orders of magnitude (time) (992 words) [view diff] exact match in snippet view article
half-life of bismuth-209 by alpha decay, one of the slowest-observed radioactive decay processes. 1.310 019 × 1012 Ys (4.134 105 × 1028 years) – The time
Berkelium compounds (2,167 words) [view diff] exact match in snippet view article find links to article
; Ensor, D. D.; Fellows, R. L. (1980). "Chemical consequences of radioactive decay. 1. Study of californium-249 ingrowth into crystalline berkelium-249
Chemical symbol (1,735 words) [view diff] exact match in snippet view article find links to article
prôtos, 'first, before') + actinium, which is produced through the radioactive decay of protactinium 7 231.03588(1) 92 U Uranium Uranus, the seventh planet
Paks Nuclear Power Plant (2,267 words) [view diff] exact match in snippet view article find links to article
inadequate cooling of the fuel elements, which were heated due to the radioactive decay of short-lived fission products. These were kept cool by water circulated
Han van Meegeren (8,036 words) [view diff] exact match in snippet view article find links to article
occurring radioactive isotope of lead that is part of the uranium-238 Radioactive decay series, and has a half-life of 22.3 years. To determine the amount
Nanomaterials (6,850 words) [view diff] exact match in snippet view article find links to article
combustion products forest fires, volcanic ash, ocean spray, and the radioactive decay of radon gas. Natural nanomaterials can also be formed through weathering
Core–mantle differentiation (1,305 words) [view diff] exact match in snippet view article find links to article
while silicate rocks soften at the upper level. The heat source is radioactive decay. Liquid iron migrated downward to levels where cooler temperatures
Weldon Spring Ordnance Works (1,204 words) [view diff] exact match in snippet view article find links to article
and surrounding soil include uranium, thorium, radium, and their radioactive decay products. The quarry contains materials contaminated with TNT and
AP1000 (4,871 words) [view diff] exact match in snippet view article find links to article
Power reactors of this general type continue to produce heat from radioactive decay products even after the main reaction is shut down, so it is necessary
Indoor air quality (6,707 words) [view diff] exact match in snippet view article find links to article
Radon is an invisible, radioactive atomic gas that results from the radioactive decay of radium, which may be found in rock formations beneath buildings
Bioplastic (6,980 words) [view diff] exact match in snippet view article find links to article
carbon-14 present in the original organic material will have undergone radioactive decay leaving only carbon-12. A product made from biomass will have a relatively
Paleopedology (3,567 words) [view diff] exact match in snippet view article find links to article
source for soils, and significantly outweighs any heat generated by radioactive decay flowing up from deep within the Earth's crust. The deposition of sediment
John Archibald Wheeler (5,869 words) [view diff] exact match in snippet view article find links to article
introduced the "Tiomno Triangle", which related different forms of radioactive decay. He also suggested the use of muons as a nuclear probe. This paper
Inductively coupled plasma mass spectrometry (6,090 words) [view diff] exact match in snippet view article find links to article
First, argon is abundant (in the atmosphere, as a result of the radioactive decay of potassium) and therefore cheaper than other noble gases. Argon
Watchmen (film) (8,262 words) [view diff] case mismatch in snippet view article
detonating energy reactors in the world's major cities, generating a Radioactive Decay Signature similar to Doctor Manhattan's. Rorschach and Dreiberg attempt