How PC Power Supplies Work
31 Mar 2008If there is any one component that is absolutely vital to the operation of a computer, it is the power supply. Without it, a computer is just an inert box full of plastic and metal. The power supply c...
HOWSTUFFWORKS
HOWSTUFFWORKS:
speeches
How Scanners Work
31 Mar 2008Scanners have become an important part of the home office over the last few years. Scanner technology is everywhere and used in many ways: * Flatbed scanners, also called desktop scanners, are ...
- 102
speeches
How Compact Disks Work
23 Feb 2008A 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 samples/channel/second x 2 bytes/sample x 2 channels x 74 minutes x 60 seconds/m...
- 107
speeches
How Radio Works
09 Feb 2008"Radio waves" transmit music, conversations, pictures and data invisibly through the air, often over millions of miles -- it happens every day in thousands of different ways! Even though radio waves a...
- 101
speeches
Why Humans Can't Breath Underwater
06 Feb 2008One thing about chemicals is that, once they react in certain ways, they form compounds that are nothing like the original elements. For example, if you react carbon, hydrogen and oxygen together one ...
speeches
How Your Lung Works
06 Feb 2008You breathe in and out anywhere from 15 to 25 times per minute without even thinking about it. When you exercise, your breathing rate goes up -- again, without you thinking about it. You breathe so re...
Load More
