Sentences with phrase «radioactive decay only»
Tellingly, there was no sign of iron, an element that forms by radioactive decay only many days after a supernova.
http://discovermagazine.com/ Not exact matches
The only previously known radioactive carbon isotope at the time was carbon - 11, which had a half - life of only 21 minutes (half the isotope's radioactivity will decay in that time).
Reburning spent rods in an SFR also reduces their radioactive decay time; the resulting waste would have to be sequestered for only a few hundred years instead of several thousand.
The radioactive ununpentium (a temporary name meaning «one - one - five») existed for only a fraction of a second before decaying into other elements.
They feel only the weak force responsible for radioactive decay and the weaker force of gravity, so they can begin to cluster under the action of gravity earlier than ordinary matter.
(The weak force, which acts only over very short distances, is the force of nature responsible for radioactive decay, among other phenomena.)
«If emissions are rapidly reduced, then the decrease in the fraction of radiocarbon in the atmosphere will be equivalent to only about a hundred years of radioactive decay,» said Graven.
I've heard that one can speed up radioactive decay slightly by compressing the radioactive material, but the best speed - up I've heard of is only one percent, and the compression would probably consume a lot of energy.
The thermal flux from the relic fossil heat from the Earth's interior plus radioactive decay, is about 50TW total, is only 0.03 % of the energy budget according to wikipedia.
We should study all aspects of climate, including the most important source of energy into our world climate system (the only other being radioactive decay heat, I believe) a little longer before we make simplifying assumptions that lead us to stupid answers (such as CO2 is the only thing that affects world climate — which is effectively what the IPCC and green lobby asserts today regardless of how much they weasel word it if pressed.)