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ultraviolet light

Ultraviolet Waves
Image: NASA/SDO/AIA

Ultraviolet Waves

Sunscreen claims to block ultraviolet light. That's good, because UV light waves, which are shorter than the ones our eyes can see, can cause sunburns and skin cancer.

But instruments that display UV light in familiar colors have given scientists new insights into flowers, the Earth, the Sun, even whole galaxies. Now you too can see the universe in a whole new light.

NASA
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The Electromagnetic Spectrum

The Electromagnetic Spectrum

Still unsure which wavelengths belong where on the electromagnetic spectrum, or what their uses are? Then don't miss this animation and quiz. More...

Interactive
BBC
Tribioluminescence

Tribioluminescence

Generate a pulse of ultraviolet light by crushing wintergreen-flavored candies — if you do it in a dark room, you'll see that the UV pulse causes the mint to emit a pulse of visible light. More...

Activity
Discovery
6 Animals that Can See or Glow in Ultraviolet Light

6 Animals that Can See or Glow in Ultraviolet Light

To animals ranging from butterflies to reindeer, we’re color blind. Here’s how a variety of creatures make use of UV radiation. (Don’t forget the click the links.) More...

Article
The Atlantic
How Bees Can See the Invisible

How Bees Can See the Invisible

See a flower as a bee sees it. Flowers attract bees to their nectar and pollen by showing them things they don't show us. More...

Video
It's Okay to Be Smart/PBS
Light Facts

Light Facts

Did you know light travels at different speeds through different materials? A snack of facts awaits you here. More...

Article
Science Kids
Modified Cotton Cleans Itself When Exposed to Sunlight

Modified Cotton Cleans Itself When Exposed to Sunlight

By absorbing ultraviolet light, titanium dioxide kills germs and breaks down dirt. Now researchers are using it to make self-cleaning clothing. More...

Article
Popular Science
Striking Photo Reveals Dark Side of Sunshine

Striking Photo Reveals Dark Side of Sunshine

A shocking photo shows what UV light can do to skin over many years, even through a window. More...

Article
LiveScience
Tanning

Tanning

There's nothing like a day filled with sunshine! But remember to take care of your skin and the rest of your body. Find out how tanning happens and how to avoid sun damage. More...

Article
TeensHealth
The Antarctic Ozone Hole, from Discovery to Recovery

The Antarctic Ozone Hole, from Discovery to Recovery

Amazingly, the world’s countries have all cooperated to stop UV light from causing a disaster on our planet. Scroll down to the video to see how this came about. More...

Video
United Nations Environment Programme

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