Sentences with phrase «ray bombardment»
But carbon 14 also forms high in the upper atmosphere, where cosmic ray bombardment occurs.
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Supernovae, the explosions of stars, have recently been confirmed as significant contributors to the cosmic ray bombardment of Earth.
Would not a weakened polar field over a period of, say, a few hundred years result in a greatly accelerated mutation rate due to direct cosmic - ray bombardment?
Using the SAM mass spectrometer to measure the abundance of three isotopes that result from cosmic - ray bombardment — helium - 3, neon - 21, and argon - 36 — Farley and his colleagues calculated that the mudstone at Yellowknife Bay has been exposed at the surface for about 80 million years.
Or, that Lise Meitner (1934) was the first to describe how outer - shell electrons were ejected after gamma ray bombardment of an atom.
These include use in high power electronic devices and in harsh environments like the engine of a car or under cosmic ray bombardment in space.
Not exact matches
People working for extended periods on the International Space Station, however, do not face the same level of bombardment with galactic cosmic rays because they are still within the Earth's protective magnetosphere.
A better understanding of the structure of Earth's inner core would clarify its role in locking the planet's magnetic field in its north - south position, which has the effect of insulating terrestrial life from a lethal bombardment of cosmic rays.
That idea never stood up to the harsh lunar reality of cosmic rays and meteorite bombardment.
«The planet has been through a lot worse than us... been through earthquakes, volcanoes, plate tectonics, continental drift, solar flares, sun spots, magnetic storms, the magnetic reversal of the poles, hundreds of thousands of years of bombardment by comets and asteroids and meteors, worldwide floods, tidal waves, worldwide fires, erosion, cosmic rays, recurring ice ages — and we think some plastic bags and some aluminum cans are going to make a difference?»