ultraviolet ray


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Related to ultraviolet ray: infrared ray, Gamma rays, visible light

ultraviolet ray

An invisible ray of the spectrum beyond the violet rays. The wavelengths of ultraviolet rays vary. They may be refracted, reflected, and polarized, but will not traverse many substances impervious to the rays of the visible spectrum. They rapidly destroy the vitality of bacteria, and are able to produce photochemical and photographic effects.
See also: ray
References in periodicals archive ?
The black light lamp which produces the ultraviolet ray intensity is higher than in the sunlight by far the ultraviolet ray intensity, also the duration to the human body harmful influence to be longer.
Moreover, if you've had cataract surgery to restore vision, you may be even more vulnerable to the sun's ultraviolet rays.
Any exposure to ultraviolet rays also means that the risk of these damaging the skin in serious ways is increased, and the damage builds up with more exposure (it's 'cumulative').
Iran's Health Ministry has outlawed the use of tanning beds on health grounds and warned Iranians of the cancer hazards of exposure to ultraviolet rays.
The sun emits ultraviolet rays, an invisible form of radiation that can penetrate the skin and cause skin cancer, which is the most common form of cancer in the United States.
Just as the sun's ultraviolet rays can burn skin, they can also damage epoxy coatings that are unprotected by paint.
Most types of sunglasses are coated with a special material that blocks the sun's ultraviolet rays from hitting a person's eyes.
Concerned that tanning rays can cause skin cancer and eye damage, Ohio Representative Courtney Combs wants to require a doctor's prescription before allowing teens to expose themselves to tanning booths' ultraviolet rays.
Unlike high-altitude ozone, which blocks harmful ultraviolet rays, low-level ozone damages plants, reducing their capacity to take up carbon dioxide.
Sunlight contains ultraviolet rays (UV rays for short).
Tokyo, Japan, Feb 27, 2007 - (JCN) - Toshiba Lighting & Technology Corporation (Toshiba) has developed a metal halide lamp with a specialized clear coating that absorbs 99% of the ultraviolet rays that attract insects.
Skin protects people from harmful environmental agents, bacteria, and ultraviolet rays.

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