But a product's SPF indicates only its ability to defend against sunburn-causing ultraviolet-B rays and not against ultraviolet-A, which penetrate deeper into the skin and cause premature aging. (Both types contribute to skin cancer.) For example, a person wearing SPF 50 could spend considerable time in the sun without getting burned.
His weapon: a rolling, 3-foot-tall machine (think R2-D2 from Star Wars) called the Xenex that bathes hospital rooms with intense, millisecond pulses of ultraviolet light from a high-wattage strobe light.
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Galex - a space telescope designed to search for the ultraviolet light that newly born stars put out - hinted that NGC 6872 was made much larger in size by the collision.
In 1998 chipmakers took up so-called deep ultraviolet light, which has a wavelength of 0.248 microns.
Now they have something that works like a flatbed document scanner, with a scanning head containing either six or 12 light-emitting diodes, each emitting light of a specific wavelength between 350 nanometres (ultraviolet) and 800 nanometres (infra-red).
When used on Ultraviolet, Dolby Digital Plus offers content-encoding providers a powerful means to ensure consumers get the experience envisioned by the music artist, film director, or sound designer.
M-GO supports multiple digital lockers including UltraViolet, a digital rights authentication and home entertainment industry standard that lets consumers safely and securely download and stream their purchased movies and TV shows via a cloud-based entertainment collection for viewing on TV screens, personal computers, tablets and mobile phones.
ENGADGET: M-GO video on-demand movie service launches, streams to PCs, Samsung and Vizio players
After two years of tinkering he created a 16-pound version of the ultraviolet water sterilizers that are commercially available in the U.S. for home wells with contamination problems.
After two years of tinkering he created a 7-kilo version of the ultraviolet water sterilizers that are commercially available in the U.S. for home wells with contamination problems.
"With UltraViolet, consumers enjoy the flexibility and security of cloud-based entertainment rights combined with the choice-expanding benefits of a widely honored industry standard, " said Mark Teitell, general manager of UltraViolet.
ENGADGET: Seagate now a DECE member, supporting UltraViolet HD
"It's very desirable for cultural heritage conservation because with a lot of other techniques like X-ray or ultraviolet, there is some molecular breakdown in the materials, " Dr Jackson told the meeting.
While the ozone layer in the upper atmosphere plays an important role in limiting harmful ultraviolet light reaching the Earth's surface, low-level ozone is a pollutant that is harmful, causing respiratory problems in animals as well as well-documented cases in humans.
The number of devices and services that support high-definition entertainment is growing rapidly, and Dolby Digital Plus is a powerful and efficient way to bring high-quality audio to UltraViolet, which combines the benefits of cloud access with the power of an industry standard.
Walmart Entertainment launched its in-store disc-to-digital Ultraviolet conversion early last year, and now it's making the process a bit simpler by letting customers do it by themselves at home.
Orb-weaver spiders attract insects to their webs with ultraviolet (UV) decorations, according to a new study.
While the overall Ultraviolet sign-up process and its multiple logins hasn't gotten any easier, once we created a ParamountMovies.com account we were able to stream a copy of Hugo unlocked by the Blu-ray 3D version in HD just by signing into the free app (XBL gold subscription required) on the Xbox 360 -- no antiquated discs necessary.
ENGADGET: Paramount Movies Ultraviolet app released for Xbox 360 HD
Today the agency proposed a new requirement that, if finalized, will require warnings on the use of ultraviolet light-emitting tanning beds by individuals under age 18 because of the increased risk of melanoma, squamous cell carcinoma, eye damage, and premature skin aging.
The two-disc set available for purchase also includes a digital copy of the film and will be enabled with UltraViolet, a new way to collect, access and enjoy movies.
ENGADGET: Top Gun Blu-ray 3D details revealed, comes home February 19th after IMAX 3D run
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