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Posts tagged water

July 21, 2017

 

A water strider

Water Surface Tension

The molecules at the surface of a body of water make a film under tension.

March 7, 2017

 

Assortment of contrails

Airplane Contrails

Why do airplanes sometimes leave long white contrails behind?

February 28, 2017

 

a close-up image of the design on a roll of paper towel. Circles made of smaller circles made of dots. The paper towel is white.

How Do Paper Towels Absorb Water?

You've seen TV ads lauding the slurping powers of paper towels; while we won't make any exorbitant claims about them, we're going to discuss how they work.

February 23, 2017

 

Ghostly fogbow over ocean

A Rainbow’s Ghostly Cousin

Fogbows are created in much the same way as normal rainbows are. The main difference is the size of the water droplets which affect the light's refraction.

December 12, 2016

 

an image of Ceres with a bright spot on it. Transmitted by DAWN, edited by Stuart Rankin.

The Bright Spots of Ceres

Even though it's three times as far from the sun as Earth, Ceres may have liquid water.

November 1, 2016

 

On the left is an illustration of a one-humped Arabian Camel, on the the right is an illustration of a two humped Bactrian Camel.

Camels

A camel draws on a whole range of adaptations so that it can travel hundreds of miles, over several days, without stopping to drink.

October 19, 2016

 

On the left side of the screen, a large spider plant. The camera angle is as if someone is looking directly down at the long, green leaves. Next to it is a jar with a much smaller version of the plant growing.

Plants in Motion

Is your houseplant moving or is that just an optical illusion?

August 3, 2016

 

Chicken noodle soup in a white bowl

Soup’s Ready!

Why does blowing on hot soup help to cool it off? The answer is evaporation.

July 27, 2016

 

1922 US Army airship

A Science Joke: Hydrogen

Why is it that you can't put down hydrogen gas? Find out on this Moment of Science.

July 8, 2016

 

oven thermometer

Charming Fahrenheit

Fahreinheit is based on Earth's range of temperatures where the median falls at zero degrees.

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