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Posts tagged north pole

August 30, 2012

 

a bar magnet surrounded by small compasses

Make Your Own Compass

Learn this old sailing trick and find your way back to shore!

November 11, 2011

 

Compass inlay in floor

Finding Your Way: Where Are The Poles

In order to point at the poles your arms must not only point northward and southward, but downward.

April 28, 2010

 

globe2_084

Why Do The Magnetic Poles Switch Places?

Have you ever wondered why the magnetic fields change places?

April 27, 2010

 

globe_083

When And How The Magnetic Poles Switch Places

Did you know that years and years ago the magnetic poles switched places?

July 13, 2009

 

Colorful effect of the aurora borealis in Canada

The Northern Lights Or Fluorescent Light?

The next time you long for the romance of the northern lights, switch on a fluorescent lamp! There may be less mystique, but the principle will be the same.

July 3, 2007

 

Tracking and data relay satellite in hangar

A Three Foot Orbit

Science tells you that you weigh less standing on the equator than you do at the north pole. Learn more on this Moment of Science.

May 8, 2006

 

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Why the Wind Blows

We will answer that question, with a question. How fast does the earth turn?

November 28, 2005

 

When North Was South

You’re a polar explorer and you’ve just reached the north pole. The huskies are yapping, the cameras are ready and you’re just about to unfurl the flag when, all of a sudden, the north pole becomes the south pole. Imagine your chagrin. Okay, so it doesn’t really happen that fast, but it’s true that in the past the earth’s magnetic poles have switched places. In fact, it seems to happen roughly every 250,000 years or so. How do we know this? Learn more on this Moment of Science.

June 30, 2005

 

Flying the Jet Stream

Flying west to east is faster than flying east to west, but why? Learn more on this Moment of Science.

May 12, 2005

 

Grab a Toga

The Greeks had it figured out that the earth was round. How did they manage it? Learn more on this Moment of Science.

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