light – A Moment of Science

When you open your eyes underwater, things look blurry, but with goggles, everything looks perfectly clear. Why can't we landlubbers focus underwater without goggles? Learn more on this Moment of Science.

Photocopying machines are fairly complicated devices, but the basic principal is pretty simple.

You may notice in a mirror that words are backwards in the reflection, but it's actually more than words that are reversed; it's everything! Learn more on this Moment of Science.

Why are letters reversed in a mirror? Learn more on this Moment of Science.

If you've ever glanced skyward, you've probably noticed the sheer numbers of stars. Some are tiny, barely visible points. Others radiate strong white light.

To really behold the stars these days, you have to travel far from cities and towns to escape urban glow. The magnificent sight of the Milky Way, for example, can now only be seen in rural areas. Why do we shine light up into the sky in the first place? We need light shining down on streets and walkways, not up into the sky! Learn more on this Moment of Science.

Researchers have been studying the effects of UV rays on whales in the Gulf of California for over three years...

There are two ingredients inside a lava lamp: a watery liquid, and a waxy compound that collects at the bottom when the lamp is turned off.

Because of the tremendous pressure, over three times that of the normal atmosphere, the lake's water remains liquid at about twenty seven degrees.

According to one study, keeping your weight in check may also depend on where you eat.

Just what is gamma radiation, and can it really turn you into the Hulk?

When looking at a picture of the sun, how could you tell whether or not it's rising or setting?

While science still has a long ways to go, new research gives us hope that we may be able to make a real lightsaber someday.

Researchers have found that depending on the season, the eyes of Arctic reindeer change from gold to blue.

Your old Super Soaker was pretty cool, but it didn't have precision like this.

Summer is nearly here. Ever wonder why moths fly toward bright lights? Find out on today's Moment of Science.

Hawkmoths not only have excellent night vision, but they can distinguish between colors in the dark.

Water is vital for life as we know it, but the light signature of water vapor proved faint and hard to detect.

Contact lenses bring objects into closer and clearer focus.

Investigators shine a light on crime scenes mysteries with the help of luminol—a luminescent chemical that reacts with blood.

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