Sentences with phrase «for radioactive decay»

Same for radioactive decay of elements in the earth, and I even calculated the energy released by burning of fossil fuels... in the end, all insignificant.

This set of four lessons goes over the exponential formula used in Physics for radioactive decay as well as teaching the basic rules of logs and why natural logs are used.

There is Carlo Rubbia who won the 1984 prize for discovering the W and Z particles, which carry the weak force responsible for radioactive decay.

(The weak force, which acts only over very short distances, is the force of nature responsible for radioactive decay, among other phenomena.)

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 Stony Brook team hopes to use its small francium stockpile to study the weak nuclear force, which is responsible for radioactive decay.

There are four fundamental forces in the universe: electromagnetism; the strong force, which binds atomic nuclei together; the weak force, which is responsible for radioactive decay; and gravity.

Hence, we have evolved with a requirement for radioactive decay.

Not exact matches

In order for K - 40 to decay by electron capture, there has to be an electron (for the radioactive nucleus) to capture.

Analyses of thin mineral deposits partly covering painted cave areas provided minimum age estimates for the art, based on known decay rates of radioactive uranium in the rock.

For instance, physicists have shown that two identical radioactive atoms will decay at different times.

In the 1920s, for instance, radioactive beta decay perplexed many physicists because it seemed not to obey the law of conservation of energy.

Strings can account for all the known physical forces: gravity, electromagnetism and the strong and weak nuclear forces, which cause radioactive decay.

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.

This is a routine bookkeeping style of research: According to known physics, this type of radioactive decay is a fundamental process that unfolds at an unchanging rate, and all the researchers were aiming to do was to measure that rate and record it for reference.

The reason for this skepticism is that Fischbach's link between solar activity and radioactive decay runs squarely against textbook physics.

One pragmatic response is to postpone decommissioning, perhaps for decades, on the basis that radioactive decay will eventually reduce the scale of the task.

Part of the EXO - 200 underground detector used to search for a hypothesized radioactive decay that could reveal how neutrinos acquire their incredibly small mass.

Go for a morning jog over hilly terrain and the very landscape is likely to be the result of tectonic plate movements, powered deep under our feet in great part by radioactive decays like that of the humble americium writ large.

Running a fusion reactor creates a small amount of short - lived radioactive waste that decays away in around a century; high - level waste from traditional nuclear reactors can stick around for thousands of years.

The laboratory techniques for dating almost anything by radioactive decay, whether a hominid fossil or a coral horn, are very similar.

The radioactive ununpentium (a temporary name meaning «one - one - five») existed for only a fraction of a second before decaying into other elements.

At the bottom of a South African mine, microbes apparently use the byproducts of radioactive decay to survive, a completely new way for an ecosystem to work.

What makes the pp reaction hard is that the neutrinos have very low energy that is about the same as the energy of various radioactive decays that happen on Earth, making it easy for an earthbound detector to confuse a decay with a neutrino event.

The Man Who Found Time James Hutton and the Discovery of Earth's Antiquity Jack Repcheck, Perseus, $ 26 In days of old — before scientists realized that radioactive decay could act as a gauge to Earth's age — scholars consulted the scriptures for clues to Earth's antiquity.

In addition, if the melted nuclear fuel proves bad enough — like Chernobyl's lethal mass of molten core known as the «elephant's foot» — it will have to be entombed for a number of years rather than removed, because of radiation risk from what is essentially a cooled shell of ceramic armor surrounding a highly radioactive core that remains hot and is still undergoing radioactive decay.

Unlike the waste from conventional nuclear power plants, which remains radioactive for tens of thousands of years, the by - products of fusion decay within decades.

The researchers were able, for the first time worldwide, to observe the radioactive decay of artificially generated nuclei of super-heavy hydrogen at the Mainz MAMI particle accelerator using a combination of several magnetic spectrometers.

For example, an electron neutrino — more precisely, an electron antineutrino — emerges when an atomic nucleus such as tritium undergoes a type of radioactive decay called «β decay» and turns into a slightly less massive helium - 3 nucleus while spitting out an electron and an antineutrino.

decay (for radioactive materials) The process whereby a radioactive isotope or particle sheds energy.

For this example, let's use radioactive decay as our topic.

The reading level is right for my students, and the article offers an interesting example of how radioactive decay can be used to help date artifacts.

For the ocean to be liquid there must be substantial sources of heat — from tidal heating based on the shape of its orbits, or from heat emanating from radioactive decay and entering the ocean through hydrothermal vents.

The half - life of a radioactive element is the time it takes for half of its atoms to decay into

DefinitionSamarium — neodymium dating uses the radioactive decay of 147Sm to 143Nd and 146Sm to 142Nd to measure the age of rocks and minerals and to trace and date geochemical processes responsible for the chemical differentiation of the Earth and the terrestrial planets and to the geochemical and cosmochemical communities in the early 1970s, the Sm — Nd radioactive decay systems have grown into essential tools in geochronology and particularly for the Sm - Nd dating of gabbro - and garnet - bearing contact metamorphic / anatectic rocks from Krutfjellet, Nordland, and some geochemical aspects of the intrusives

Objectives covered include: - structure of the atom - relative size and charges of components of the atom - definition of isotopes (includes a table for students to complete as an activity - answers provided)- comparing the three types of radioactive decay.

If flushing the litter is not possible, we advise storing the litter in a container for 3 months to allow the decay of radioactive litter.

For first order decays (think simple radioactive decay) where the rate constant k does not change over time the rate of change of x with respect to time, dx / dt, in other words how fast it decays,

The energy source for geothermal electricity generation is the tremendous heat flowing from the Earth's core and mantle and from radioactive isotopes decaying in the Earth's crust.

Except for the minuscule contribution of radioactive decay, all of this heat came from the sun and all must be radiated from the planet for it to retain its average temperature.

I had the impression that Mike was claiming that he couldn't get the Earth to cool to 3K and I was simply trying to point out that if you include radioactive decay, you wouldn't expect it to be 3K today in the absence of the Sun, and even if you ignore radioactive decay, it would still take longer than the age of the Universe for an Earth - like planet to cool to the temperature of the cosmic - background.

The transuranics are radioactive for hundreds to tens of thousands of years, and as they decay they give off different kinds of radiation.