Hormones in the body
29 Jan 2008The Pineal gland is a small gland located in the middle of the brain. Its function is to secrete melatonin, the hormone that regulates your wake-sleep cycle. As it controls this sleep pattern, any cha...
ERNEST SENAYA
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health
Simple fact about the human body
29 Jan 2008The human body, with all its powers of endurance, its life preserving systems for combating disease and taking in nourishment, and its ability through the senses to interpret what is happening in the ...
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speeches
Uses of Silicon
29 Jan 2008Silicon is used to make many electronic devices, such as transistors, integrated circuits, computer chips and solar cells because it is a good semiconductor. Silicon, when "doped" with boron, galli...
speeches
How mobile phones work
29 Jan 2008When you talk into a mobile telephone it converts the sound of your voice to radiofrequency energy (radio waves). The radio waves are transmitted through the air to a nearby base station. The base sta...
general-articles
Internet connection types
28 Jan 2008Analog (up to 56k) Also called dial-up access, it is both economical and slow. Using a modem connected to your PC, users connect to the Internet when the computer dials a phone number (which is p...
general-articles
Petroleum formation theories
28 Jan 2008fossil fuel, petroleum is believed by most scientists to be the transformed remains of long-dead organisms. The majority of petroleum is thought to come from the fossils of plants and tiny marine orga...
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