创造并散播重元素的超新星爆发同样释放出一股高能辐射的激流:伽玛射线,X射线,紫外线。
The supernova explosions that create and spread heavy elements also unleash a torrent of high-energy radiation: gamma rays, X-rays, and ultraviolet light.
紫外线是电磁波的一种,原子中的电子从高能阶跳到低能阶时,会把多余能量以电磁波释出。
UV is an electromagnetic wave, the electron atoms jump from the high-energy bands at low energy band, will release excess energy in electromagnetic waves.
更绝的是居里博士和马佩尔博士搞的另一个把戏-字面上说:在第一个玻璃片上面放置第二个,这样上层的染料截取高能量的光,比如说紫外线。
On top of this-literally-dr Currie and Dr Mapel have come up with another trick: placing a second sandwich of dye and glass over the first.
紫外线稳定剂:虽然大量的太阳高能辐射已被大气层所吸收,然而一些在280-400nm范围内的射线(紫外线)仍能达到地球表面。
Ultraviolet Stabilizers: While much of the sun's high-energy radiation is absorbed by the atmosphere, some radiation in the 280 to 400 nm (ultraviolet) range reaches the earth's surface.
紫外线稳定剂:虽然大量的太阳高能辐射已被大气层所吸收,然而一些在280-400nm范围内的射线(紫外线)仍能达到地球表面。
Ultraviolet Stabilizers: While much of the sun's high-energy radiation is absorbed by the atmosphere, some radiation in the 280 to 400 nm (ultraviolet) range reaches the earth's surface.
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