ultraviolet
紫外线
definition
noun
Once CFCs are released into the atmosphere, only strong ultraviolet radiation can break them down.
the ultraviolet part of the spectrum; ultraviolet radiation.
adjective
Diode lasers are now available in discrete colors from the infrared to blue and into the near ultraviolet .
(of electromagnetic radiation) having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays.
example
The white crystals fluoresce blue-white in longwave 'ultraviolet' radiation while the yellowish crystals fluoresce lemon-yellow.
Solar radiation is made up of three forms of energy: about 5 percent 'ultraviolet' , 45 percent visible light, and 50 percent infrared.
The escalating cost of these tools for conventional optical and extreme 'ultraviolet' lithography is driven in part by the need for complex optical sources and optics.
The combination of trauma from the oxygen mask and 'ultraviolet' from the lights in the operating theatre resulted in formation of a subepidermal blister and consequently an erosion.
We allowed systemic antihistamines, but no other systemic treatment or 'ultraviolet' light treatment was permitted.
The amount of solar 'ultraviolet' radiation at the earth's surface depends on the incoming solar energy and on the transmission properties of the atmosphere.
Taylor advised students ‘to help the police and yourself and keep all laptops and computers out of sight, and have valuables marked with 'ultraviolet' pens to help us trace stolen property.’
To concentrate on the ultraviolet part of the spectrum, we calculated the proportion of the 'ultraviolet' in each plumage spectrum measured.
Most medical lasers emit light which are either 'ultraviolet' , infrared or in the visible spectrum of light.
Injury thresholds resulting from exposure of less than 10 seconds to the skin from far infrared and far 'ultraviolet' radiation are very superficial and may involve changes to the outer dead layer of the skin.
In addition to its suite of cameras, Skylab was stocked with tons of scientific equipment, including coronagraphs, spectrometers, and 'ultraviolet' and X-ray telescopes.
The 'ultraviolet' beam of an argon laser operating at 364 and 351 nm is used to photolyze caged-nucleotide.
Last summer Japanese inventors unveiled a tiny 'ultraviolet' light sensor for cell phone users concerned about sunburn.
The functional significance of vertebrate 'ultraviolet' vision has been the focus of an increasing number of research studies over the last decade.
The PCR products were analyzed by electrophoresis on agarose gels containing ethidium bromide and were photographed under 'ultraviolet' transillumination.
The bulbs are covered with a plastic screen that helps block out potentially harmful 'ultraviolet' rays that can cause cataracts and skin problems.
The reason we need sunglasses in the first place is to protect our eyes from the sun's harmful 'ultraviolet' rays.
Unless the ship was scanned, it was invisible, since its engines were tuned to emit only in the 'ultraviolet' .
The flower on the right was photographed in normal light, the one on the left in 'ultraviolet' (he goes into the technique in some detail).
An 'ultraviolet' filter kills bacteria in a central tank with blasts of artificial light, but the risk remains that water will become contaminated in the pipes carrying it to homes.
A more accurate map shows a wash of differing hues of indigo and violet, with some smatterings of infrared and 'ultraviolet' at the extremes.
Optional Low-E glass coatings help reduce heat and 'ultraviolet' rays that can fade carpet, walls and furniture.
Diode lasers are now available in discrete colors from the infrared to blue and into the near 'ultraviolet' .
Broad-spectrum 'ultraviolet' radiation from the sun or artificial light sources was added as a known carcinogen.
The 'ultraviolet' flash from the supernova explosion, which we first saw 18 years ago, ionized the ring and causes it to glow.
But what is so special about water that makes its absorptions extend all the way from the far infrared to the near 'ultraviolet' ?
This is one of the few big instruments that will be good in the 'ultraviolet' .
It is true that 'ultraviolet' light causes mutations in all living organisms.
When many sunspots are visible, the Sun is somewhat brighter than in ‘quiet’ times and radiates considerably more in the 'ultraviolet' .
Investigators assume that 'ultraviolet' light is the most important factor for the initiation of malignant melanoma.
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