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Posts tagged light

July 19, 2017

 

light lines created by a flashlight

Light Takes Time

Learn how Roemer learned that light does take time to travel.

May 8, 2017

 

stars moving around the pole

Why Do Stars Twinkle?

Astronomers are learning more about the brightening and dimming of stars.

March 29, 2017

 

The majority of the photo is a brick wall. A black pole is on the far left. On the far right is half of a woman's face. The eye that is visible in this photo is glowing red.

Why Red Eye?

Learn why you sometimes have glowing red eyes in photographs.

January 25, 2017

 

A sun set over the Pacific Ocean in California.

The Sun Just Blew Up!

How do you know the sun didn't just explode? We aren't talking about the everyday, run-of-the-mill controlled explosion the sun is always doing, but a big boom.

December 16, 2016

 

An image of a long dirt road. Above it is the night sky. On the left large white clouds are visible. On the right, the thousands of stars in the milky way.

Saving Our Views Of The Milky Way

Have you ever seen the Milky Way outside of a photograph?

November 17, 2016

 

Blue vein in wrist

True Blue Inside of You?

Did you ever hear that blood is actually blue inside your body, but turns red instantly on contact with air? Learn more on this Moment of Science.

October 20, 2016

 

A blue background. A woman in the center of the photograph. Most of her is obscured because of a yellow-orange glow caused by a light leakage.

Afterglow

If you look at a bright lamp and then close your eyes, why can you still see the light?

June 3, 2016

 

green door with handle

The Green Door

We don't perceive color in our peripheral vision because we have no cones, which sense light frequencies, on the outer edge of our retina.

November 26, 2015

 

luminol splatter

A Moment of Crime

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

July 14, 2015

 

contact lens

Making Contact 

Contact lenses bring objects into closer and clearer focus than glasses.

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