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the part of the electromagnetic spectrum with wavelengths shorter than light but longer than X-rays; in the range 0.4 × 10--6 and 1 × 10--8 metres


Pertaining to ultraviolet radiation. Abbreviated UV.


(1) See ultraviolet light.

(2) A cloud-based storage locker for licensed content from the Digital Entertainment Content Ecosystem (see DECE). Under the Digital HD brand, purchases of Blu-ray discs with redeemable coupons and purchases of movies and TV shows (not rental) from participating online retailers entitles users to keep their content in the UltraViolet cloud and stream or download it as required.

Depending on the retailer's agreement, content might be sharable with friends and family, and parental access can be applied. A physical disc may also be obtainable. See Digital HD, Blu-ray Combo Pack and media locker.
References in periodicals archive ?
The second study, published by the same authors in the journal Molecular Carcinogenesis, shows that instead of beneficially killing cells damaged by UVA radiation, treatment with silibinin protects human skin cells from damage by UVB radiation, which makes up about five percent of the sun's radiation reaching Earth.
But until standardized testing procedures are put into place, there's no guarantee that they adequately protect against UVA radiation.
The elastic tissue content as measured by computerized image analysis of elastic tissue-like staining shows a quantitative difference in effect between solar-simulated UV and UVA radiation.
UVB radiation can lead to sun-burn and skin cancer and UVA radiation leads to skin aging, impacts on the human immune system and it is also a cause for skin cancer.
While many consumers buy films to make their cars more stylish, LLumar films also reduce heat and glare, and protect people by shielding skin and eyes from the damage of UVA radiation," says Feese.
In response to these market developments, major innovative resin and coatings suppliers focused their research efforts on developing products that were robust and could cure under low intensity UVA radiation.
Not all sunscreens provide protection against UVA radiation.
UVB, the "burning ray," has a shorter wavelength but is 1,000 times more powerful than UVA radiation.
Up until a few years ago, according to Jean King, director of education for the CRC, doctors thought that UVA radiation was relatively safe.
Most tanning equipment utilized today predominately emits UVA radiation, causing growing concern among dermatologists.
Scientists have only recently started paying attention to UVA radiation, once known as "tanning rays" in contrast to UVB's "burning rays.