How The Microwave Oven Works
03 Mar 2008 Microwave ovens use various combinations of electrical circuits and mechanical devices to produce and control an output ..- 117
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Basics Of Sound
28 Feb 2008 Inside your ear is a very thin piece of skin called the eardrum. When your eardrum vibrates, your brain interprets the v..- 104
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Why Water And Oil Don't Mix
27 Feb 2008 The water molecule is made up of two hydrogen atoms and one oxygen atom. Due to the ability of the oxygen atom to p..- 82
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CD-ROM Data Encoding And Reading
23 Feb 2008 The CD-ROM, like other CD adaptations, has data encoded in a spiral track beginning at the center and ending at the oute..- 111
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How Compact Disks Work
23 Feb 2008 A CD can store up to 74 minutes of music, so the total amount of digital data that must be stored on a CD is: 44,100 ..- 107
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What Are Pixels
21 Feb 2008 Pixels are dots used to display an image on a screen or printed matter. The words pixel is a blend of the words picture ..- 103
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Muscle Types Of Humans
20 Feb 2008 There are about 650 muscles in the human body. Muscles are made of fibers that enable them to shorten and lengthen, p..- 99
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How The Stocks And Stock Market Work
20 Feb 2008 The stock market appears in the news every day. You hear about it any time it reaches a new high or a new low, and you a..- 100
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Depletion Of The Ozone Layer
20 Feb 2008 Up in the stratosphere, small amounts of ozone are constantly being made by the action of sunlight on oxygen. At the sam..- 108
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How An Air Conditioner Works
20 Feb 2008 Air conditioners and refrigerators work the same way. Instead of cooling just the small, insulated space inside of a ref..- 93
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Planet Mars
20 Feb 2008 Q) Why is Mars so cold? A) Mars is cold because it is much farther from the Sun than Earth. Because of this, Mars recei..- 102
