Sentences with phrase «radioactive atoms»
"Radioactive atoms" refers to atoms that are unstable and release energy in the form of radiation. Full definition
A half - life usually describes the decay of discrete entities, such as radioactive atoms.
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However, it has long been known that positrons are produced by the decay of radioactive atoms and by astrophysical phenomena, such as cosmic rays plunging into the atmosphere from outer space.
The idea that every particle has an identical — but so far undetectable — mirror partner was dreamed up to explain baffling asymmetries in the emission of electrons from radioactive atoms.
The man with radioactive atoms flowing through his veins seems calm.
For instance, physicists have shown that two identical radioactive atoms will decay at different times.
That's why we can tell the age of rocks, fossils and prehistoric artefacts by the activity of radioactive atoms within them, and why nuclear waste becomes less toxic over time.
It is not clear that the authors consider how long radioactive atoms remain in our body, since we excrete them along with other atoms; the numbers below may overstate the case as the authors assume a residence time as long as 50 years.
G. Brent Dalrymple's classic debunking of the young - earth «scientific» creationism's dating methods with a short explanation of how geologists know the age Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.
This method, known as targeted radionuclide therapy, or TRT, involves the use of molecules labeled with radioactive atoms that are injected into patients and localized in cancer cells.
The false vacuum was unstable, like a radioactive atom waiting to decay.
But unlike a radioactive atom, which either decays or doesn't, the false vacuum can decay in some places but not in others.
Like a key fitting into a lock, the carrier molecules bind to certain receptors or biomarkers and the radioactive atoms enable PET or SPECT scanners to image areas where the tracers have collected in large numbers.
Radiotracers are made up of carrier molecules that are bonded tightly to a radioactive atom.
But radioactive atoms have unstable nuclei, meaning they can move around the chart.
This can be the tick - tock of an escapement, an oscillating quartz crystal or the ejection of a particle from a radioactive atom — one way or another, there must be movement.
As Kaiser explains it, an experiment would go something like this: A laboratory setup would consist of a particle generator, such as a radioactive atom that spits out pairs of entangled particles.
As Formaggio explains it, when a radioactive atom such as tritium decays, it turns into an isotope of helium and, in the process, also releases an electron and a neutrino.
But making an atom with 114 protons and 184 neutrons would require an intense beam of radioactive atoms, something that can't be produced with existing technology, says Michael Thoennessen of Michigan State University in East Lansing, who catalogues new isotopes.
The problem goes like this, Tollaksen says: Take two radioactive atoms, so identical that «even God couldn't see the difference between them.»
In the well - known thought experiment, the decay of a radioactive atom determines a cat's fate.
To illustrate this effect, Schrödinger imagined putting a cat in a box along with a device that would release poison to kill it, depending on the random decay of a radioactive atom.
Electric and magnetic properties of a radioactive atom provide unique insight into the nature of proton and neutron motion.
Whereas iodine - 131 has a half - life of 8 days, caesium - 134 has a half - life of 2 years and caesium - 137 is a whopping 30 years — meaning it takes that long for half of the radioactive atoms in each substance to disintegrate.
his document Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.
Radiometric dating measures the decay of radioactive atoms to determine the age of a rock sample.
The destructive power of the alpha particle — a helium - like structure ejected from the nucleus of a radioactive atom — offers a curiously poetic foil for Basquiat's aesthetic.