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Posts tagged force

June 4, 2012


two draft horses pulling


If you can't name a politician who was also an active scientist, that doesn't mean they haven't been out there.

March 23, 2012


knives in a kitchen

What’s So Special About A Sharp Knife?

Everyone knows that a sharp knife cuts better than a dull one, but do you know why, exactly?

December 21, 2010


Leaning Tower of Pisa

The Physics Of Ramps: What Hits The Ground First?

Galileo's classic physics experiment looked at using a ramp!

December 20, 2010


The Empire State Building in New York, New York

Which Hits The Ground First: A Golf Ball Or A Bowling Ball?

Yes, the classic physics question is visited again. A Moment of Science learns about mass and gravity.

February 27, 2009


Blue whirlpool in drain

The Shape of a Whirlpool

A whirlpool is the result of two forces acting against each other.

December 5, 2008


Man tossing frisbee in park

Why Frisbees Fly

With a gentle flick of the wrist on a warm summer day, you can launch a frisbee on a long and graceful flight. Why do they fly so well?

October 17, 2007


Pink Balloon

Helium Balloons

Helium balloons fly because they're lighter than air. As you walk through air, it's natural to think of air as weighing nothing, though that is not the case.

June 1, 2007


magnets are used to levitate a live frog

Levitating Frogs?

While it might take a unbelievable magnet to levitate a frog, there are magnetic forces in everything around us, including ourselves!

January 22, 2007


a men and women restroom sign

Frightening Flushes

Why do public toilets flush so much more forcefully than the ones at home?

January 23, 2006



Dancing in Air

A skydiver's body is in a delicate balance. Gravity tugs her downward with a constant, relentless force, while air resistance pushes her upward.

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