Sentences with phrase «produced by cosmic rays»

The isotope carbon 14 is produced by cosmic rays in the atmosphere.

Some of these light - element nuclei also might be produced by cosmic rays shattering atoms of carbon, nitrogen, oxygen, and other elements in the interstellar medium.

When they then bombarded this «cloud» with low - energy electrons like those produced by cosmic rays, chlorine was produced.

Krypton is produced by cosmic rays bombarding Earth and then stored in air bubbles trapped within Antarctic ice.

Not exact matches

Space is permeated by cosmic rays, which are high - speed particles produced by powerful events like flares on the Sun or exploding stars in deep space.

The neutrons are produced when the lunar surface gets bombarded by cosmic rays.

Outer space may look mostly empty, but it's actually packed with cosmic radiation — gamma rays and charged particles produced by exploding stars, black holes and other violent astrophysical phenomena.

Instead, the signal could be produced by amplified cosmic rays generated when particularly large stars explode, says Peter Biermann of the Max Planck Institute for Radioastronomy in Bonn, Germany, and colleagues.

The renowned British physicist Paul Dirac first posited the existence of antimatter in 1928, and four years later researchers at Caltech detected the first documented antiparticles — positrons produced by the impact of cosmic rays on the atmosphere.

The team concludes that these signals are generated by speeding electrons produced when cosmic rays collide with molecules in the air (Physical Review Letters, DOI: 10.1103 / PhysRevLett.105.151101).

In what Grashorn calls a «serendipitous discovery», his team has worked out that these signals are generated by speeding electrons produced when cosmic rays collide with molecules in the air.

Carbon dating doesn't work well on ice because carbon - 14 is produced in the ice itself by cosmic rays and only goes back some 50,000 years.

Each isotope is produced at a different rate by cosmic rays and has a different half - life.

They studied boulders from the New Zealand site where the glacial wood had been found, measuring the concentrations in the rocks of radioactive isotopes beryllium - 10 and chlorine - 36, which are produced by nuclear reactions between minerals and cosmic rays.

Li's team showed that during CRAND, cosmic rays entering Earth's atmosphere collide with neutral atoms, creating a splash that produces charged particles, including electrons, that become trapped by Earth's magnetic field.

Ultrahigh - energy cosmic rays are the most energetic particles in the universe — each of them carries an energy that is too high to be produced even by the Large Hadron Collider, the most powerful particle accelerator in the world.

When those atoms are hit by energetic cosmic ray particles, they break up in fragments, including beryllium nuclei, which can't be produced by any other means.

The cosmic rays produce rare chemicals in the rocks, and by analyzing the concentrations of those chemical isotopes, researchers at Schaefer's lab are able to determine just how long ago the rocks were first exposed to the sun — and thus when they were left behind by the glacier.

The EUSO telescope, which will be used to find debris, was originally planned to detect ultraviolet light emitted from air showers produced by ultra-high energy cosmic rays entering the atmosphere at night.

«High - energy neutrinos are produced along with gamma rays by extremely high - energy radiation known as cosmic rays in objects like star - forming galaxies, galaxy clusters, supermassive black holes, or gamma - ray bursts.

When the glacier starts to retreat, the frontal moraines are no longer protected by the ice, and a sort of «geological chronometer» is triggered, as the rocks begin to accumulate beryllium - 10 and helium - 3 produced by particles resulting from cosmic rays.

Researchers tallied the figure by measuring the concentrations of beryllium - 10, an isotope produced naturally when cosmic rays strike rocks at Earth's surface, in sediments gathered from slopes and riverbeds (image).

Devilish OMG particles Tens of millions of times more energetic than particles produced by the most powerful human - made accelerators, ultra-high-energy cosmic rays are a mystery — there is no known phenomenon in the Universe that could create them.

The idea is to detect neutrinos produced by interactions between cosmic rays and Earth's atmosphere.

It was the first cosmic event in history to be witnessed via both traditional telescopes, which can observe electromagnetic radiation like gamma rays, and gravitational wave detectors, which sense the wrinkles in space - time produced by distant cataclysms.

Some gamma rays can be produced by radioactive elements within Ceres itself, but most are byproducts of cosmic rays originating from elsewhere in space.

This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay.

The evidence for the long - held idea that processing of ices by energetic photons and cosmic rays produces complex molecules is weak.

He also looked at the tree - ring 14C record, using the hypothesis that in the absence of solar activity the high energy cosmic rays which produce 14C in the atmosphere penetrate to circumterrestrial space in greater fluxes, being less repelled by the solar wind.

Cosmogenic nuclides are isotopes that are produced by interaction of cosmic rays with the nucleus of the atom.

With the cosmic ray effect we have ~ 0.3 C of solar warming combined with ~ 0.2 of CO2 warming, which is then offset by human - produced aerosols to yield ~ 0.3 of waring.

They are produced in the atmosphere by the interaction of galactic cosmic rays with the atoms of the atmosphere.

Cosmogenic isotopes, which are produced by galactic cosmic rays impacting on meteoroids and whose production rate is modulated by the varying HMF convected outward by the solar wind, may offer an alternative tool for the investigation of the HMF in the past centuries.

But C - 14 is continuously produced in the upper atmosphere by cosmic ray activity and there is no acknowledged level of production.

Much longer records of solar behavior come from atomic isotopes that are produced in our atmosphere by the impact of galactic cosmic rays, whose rate of incidence at the Earth is affected by conditions on the Sun.

But it was cold this winter and C02 is plant food and only a trace gas and the greenhouse effect has been disproved anyway and even if the greenhouse effect does exist, C02 has negligible impact compared to water vapour and our only source of heat is the sun so it must be the sun, unless it is due to the C02 from volcanoes, but C02 follows warming so it can't be the C02 and the medieval warm period was warmer anyway and all the temperature reconstructions that show this not to be true are produced by corrupt scientists being paid by corrupt governments that have colluded to create an excuse to form a one world unelected social - ist government and even if the scientists are not that corrupt, although the e-mails prove they are, they have still got it wrong as the climate sensitivity is not as high as they think it is because it is basically the planets orbits and cosmic rays so we can say for a fact that the warming that probably does not exist is definatley not due to humans and even if it was the evidence is not sufficient to make drastic changes to the economy and increase taxes so that the politicians and scientists and business leaders get rich and leave us all poor — do they think we are stupid or something?