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Ultraviolet

The Confession Machine uses UV LEDs to print disapearing messages onto photosensitive pape...

Israeli artist Liat Segal has created a device that uses light to print fading messages onto photosensitive paper. The Confession Machine uses ultraviolet (UV) LEDs that are programmed to switch on and off at certain intervals in order to print people's confessions onto paper coated with a UV sensitive pigment. Then they disappear.  Read More

The UVA+B Sunfriend features LED lights that indicate when users have had a healthy dose o...

Most of us are aware of the dangers surrounding the amount of time we spend in the sun. Although we rely on exposure to sunlight to provide us with vitamin D, a lack of protection from harmful ultraviolet (UV) rays can lead to skin cancer. It can be a fine line between a healthy dose of sun and retreating indoors to coat ourselves in Aloe vera. The UVA+B Sunfriend aims to promote a healthy amount of sun exposure by alerting users when it is time to make for the shade.  Read More

Workers harvest sunscreen-producing bacteria from Norway's Trondheim fjord (Photo: Credit ...

The next generation of powerful sunscreens may have their roots in some unlikely sources – corals from the Great Barrier Reef and bacteria found in the Trondheim Fjord in Norway. When developed, these new sunscreens could offer protection across a wider band of ultraviolet (UV) radiation suspected to cause deadly forms of skin cancer, which current sunscreens don't protect against. The discoveries represent huge breakthroughs, made possible by harnessing the natural sunscreen abilities that these life forms have developed over millions of years to survive the harsh UV radiation in their respective environments.  Read More

Selective UV light keeps beautiful, lush strawberries that way even longer  (Photo: Shutte...

A truism as old as strawberry picking is the observation that the juicier and tastier the strawberries, the more quickly the berries turn to a mushy heap of rot and mold, even in the fridge. An answer to longer fruit storage may come with research showing that selective UV light inhibits both decay and the growth of mold. With new LEDs able to produce specific types of UV light, we might see gadgets for use in the fridge that keep produce fresher longer.  Read More

The UVeBand is a UVA and UVB-measuring wrist band, that vibrates when it's time to apply m...

If you spend much time outdoors in the summer, then you doubtless know how important it is to wear sunscreen. That said, you probably also know that just applying it once before you first go outside isn’t good enough – for sufficient protection from the sun’s ultraviolet rays, periodic reapplications are also necessary. The UVeBand is a new wearable device, that’s designed to let you know when it’s time for those reapplications.  Read More

Toyota's F 'Ciel' Vitz is one of the models using Asahi's new tempered glass, that offers ...

As prolonged exposure to sunlight increasingly becomes a health hazard, causing skin problems and even cancer, automakers have started to incorporate glass that blocks harmful ultraviolet light. Japan's Asahi Glass Co (AGC) has added to its portfolio a new line of tempered front window glass called UV Verre Premium Cool on, which it says is the first of its kind to block about 99 percent of ultraviolet radiation, along with infrared (IR) rays.  Read More

A new UV dosimeter wristband is designed to help prevent things like this happening (Photo...

With around 200,000 new cases worldwide of malignant melanoma, the most virulent form of skin cancer, reported in 2008 according to Cancer Research UK statistics, limiting exposure to the sun is vitally important. But keeping track of our exposure, particularly on cloudy days, can be a difficult exercise. New technology developed at the University of Strathclyde makes things easier by providing a visual warning of when to seek some shade or slap on some more sunscreen.  Read More

Partial interior assembly of Degradation Free Spectrometers sounding rocket (Photo: Univer...

On July 24, 2012, NASA successfully launched a pair of newly developed spectrometers aboard a sounding rocket from the White Sands Missile Range, New Mexico to an altitude of 323.8 km (201.2 mi). This may not seem to have much to do with extending the life of a satellite floating between the Sun and Earth about 1.5 million kilometers (932,000 mi) away, but it does. That’s because the tests purpose was both to test new instruments for a potential future replacement of the SOHO solar observatory satellite and to recalibrate SOHO’s existing instruments.  Read More

A plastic garden furniture armrest without (left) and with (right) a self-cleaning photoca...

For many people, the onset of warmer weather can mean pulling out the ol' scrubbing brush and getting to work on the slimy film of moss, algae, fungi and bacteria that has built up on the garden furniture over the colder months. But we may soon be able to say goodbye to this tiresome chore thanks to researchers at Fraunhofer who are developing coatings that would be activated by the sun’s rays to destroy organic substances attaching themselves to various surfaces.  Read More

The new super-black coating made from hollow carbon nanotubes prevents reflection because ...

When it comes to gathering measurements of objects so distant in the universe that they can no longer be seen in visible light, the smallest amount of stray light can play havoc with the sensitive detectors and other instrument components used by astronomers. Currently, instrument developers use black paint on baffles and other components to help prevent stray light ricocheting off surfaces, but the paint absorbs only 90 percent of the light that strikes it. NASA engineers have now developed a nanotech-based coating that absorbs on average more than 99 percent of the ultraviolet, visible, infrared, and far-infrared light that hits it, making it promising for a variety of space- and Earth-bound applications.  Read More

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