Thursday, July 23, 2009

Infra red images of everyday life

http://www.youtube.com/watch?v=Lcf9wyW_3GEendofvid
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Infra red light can be thought of as “heat”
The warmer something is, the more brightly it glows in the infrared.
Apiece of glass may be bright, but it is cool, so it will appear black in the infra red camera.
Even though a person may stand in shadows her body heat shines in the infrared.
[endtext]
at July 23, 2009
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The huge shadow called eclipse

What causes an eclipse of the moon?
An eclipse is nothing more than a shadow, actually a huge shadow. Don’t believe on me? What this video and learn more about eclipses and our natural satellite, the moon.
[endtext]
at July 23, 2009
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Why doesn't the moon falls down on earth? Actually it falls!

Have you asked for yoursel why doesn't moon falls on earth? Watch this video and find out that actually it is falling, all the time.
at July 23, 2009
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Have you ever thought why there aren’t green stars?

http://www.youtube.com/watch?v=BvjeP3SfD1gendofvid
[starttext]
Have you ever thought why there aren’t green stars?
Looking to the sky at night we can identify some red stars, yellow stars and blue stars indeed, we’ll never see a green star.
Watch this video and find out the answer.
[endtext]
at July 23, 2009
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Stellar evolution video: how stars live and die



What a star really is? How matter ( gas and dust) collapse by the gravity force?
What is the end of a star?
You can find the answers for these questions and much more information about the stars evolutions on this video.
at July 23, 2009
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What makes the sky blue?


Play baseball with molecules and learn what makes the sky blue or sometimes red!
at July 23, 2009
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The effects of solar winds


This video shows the effects of solar winds on earth, the hazards, boreal aurora and the earth's magnetic field protection against solar particles
at July 23, 2009
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