Radiation
in sentence
444 examples of Radiation in a sentence
First of all, most black holes accrete, or absorb matter and energy, more quickly than they emit Hawking
radiation.
And while Hawking
radiation
has never been directly observed, some scientists believe that certain gamma ray flashes detected in the sky are actually traces of the last moments of small, primordial black holes formed at the dawn of time.
And then you see this sort of model area around the outside, and that is the
radiation
coming from the Big Bang, which is actually incredibly uniform.
And so my work, really, is trying to understand the character of that Mesozoic
radiation
compared to the Cenozoic
radiation
to see what mysteries we can understand from dinosaurs and from other animals about what life on drifting continents really can tell us about evolution.
Looking at dinosaur evolution and studying it, digging it up for many years, I end up looking at the mammal radiation, and it seems as though everything is quick time, just like technology, advancing by an order of magnitude.
That's where the
radiation
began.
That is 10 times larger than the mammal radiation, which was a four-legged
radiation.
It's really a wholly separate
radiation.
Even the Lawrence Livermore National Labs have gotten into the act, designing a prototype phone that has
radiation
sensors to find dirty bombs.
She had gone through a series of chemotherapy and
radiation
treatments over several years, and her leukemia had always come back.
But at the time when life began, the UV
radiation
on Earth’s surface was likely too harsh for life to survive there.
One setting offers protection from this
radiation
and an alternative energy source: the hydrothermal vents that wind across the ocean floor, covered by kilometers of seawater and bathed in complete darkness.
It takes a full eight minutes for its
radiation
to reach us.
And it produced the ozone layer, which protects modern life from the harmful effects of the sun's UVB
radiation.
Some have theorized that information actually is encoded in the escaping radiation, in some way we can’t yet understand.
Like thermal
radiation
in a heater, neutrinos pump energy into the core, increasing the possibility of disrupting the star.
This is derived from an organism, deinococcus radiodurans, that can take three million rads of
radiation
and not be killed.
It reassembles its genome after this
radiation
burst in about 12 to 24 hours, after its chromosomes are literally blown apart.
This is a glass beaker after about half a million rads of
radiation.
Here's an actual picture of what happens: the top of this shows the genome after 1.7 million rads of
radiation.
And for many decades now there have been a series of TOMS satellites that have collected data about the
radiation
of the Earth's surface.
The TOMS 7 satellite data, shown here, show the annual average ultraviolet
radiation
at the Earth's surface.
And what Darwin could not appreciate, or didn't perhaps want to appreciate at the time, is that there was a fundamental relationship between the intensity of ultraviolet
radiation
and skin pigmentation.
Let's first look at the relationship of ultraviolet
radiation
to the Earth's surface.
In those early days of our evolution, looking at the equator, we were bombarded by high levels of ultraviolet
radiation.
Where it protected the body against the degradations of ultraviolet radiation, the destruction, or damage to DNA, and the breakdown of a very important molecule called folate, which helps to fuel cell production, and reproduction in the body.
So if we're somewhere in the Northern Hemisphere, look at what's happening to the ultraviolet
radiation.
In the winter, when you are skiing in the Alps, you may experience ultraviolet
radiation.
Because the problem there is just as severe, but it is more sinister, because vitamin D deficiency, from a lack of ultraviolet B radiation, is a major problem.
We need mass to protect ourselves from the temperatures, from the
radiation
and from the meteorites.
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