UV Rays

Some articles on uv rays, rays, uv, ray:

Ultraviolet Light And Cancer - Prevention
... It is important to protect oneself form Ultraviolet radiation year round, UV rays can reach the skin not only on sunny days but cloudy days as well ... UV rays are strongest between 10 am and 4 pm during spring summer and fall months ... UVA rays can penetrate through glass, to block these rays use a UV protective film on windows ...
Electromagnetic Spectrum - Types of Radiation - Ultraviolet Light
... Next in frequency comes ultraviolet (UV) ... The wavelength of UV rays is shorter than the violet end of the visible spectrum but longer than the X-ray ... UV in the very shortest range (next to X-rays) is capable even of ionizing atoms (see photoelectric effect), greatly changing their physical behavior ...
CD-R - Physical Characteristics
... lacquer is applied on top of the metal reflector and cured with UV-light ... based CD-Rs, as well as all the hybrid dyes based on cyanine, were very sensitive to UV-rays and could have become unreadable after only a few days if they were exposed to direct ... more stable, it is still the most sensitive of the dyes in UV rays (showing signs of degradation within a week of direct sunlight exposure) ...
Optical Media Preservation - Damage To Optical Discs - Environmental Considerations
... the disc or damage the data layer with UV rays ... UV rays in sunlight are energetic enough to produce a photochemical reaction that changes the optical properties of the dye ... The phase-changing film in RW and RAM discs is not light-sensitive, and UV rays do not affect the optical properties of the film ...

Famous quotes containing the word rays:

    Thus while I sit and sigh the day
    With all his borrow’d lights away,
    Till night’s black wings do overtake me,
    Thinking on thee, thy beauties then,
    As sudden lights do sleepy men,
    So they by their bright rays awake me.
    Sir John Suckling (1609–1642)