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Basic in Computer/Computer Note/complete history of computer/Hardware/Software/What is Computer/How to open Computer

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Tiny Wonders What is an Atom?   ATOMS ARE THE VERY SMALL BITS or particles of the thing of which any substance is made. They are too small to be seen. Two billion atoms would fit on the dot that is on the top of this 'i'. Scientists earlier thought atoms were the tiniest things in the universe, like hard balls that could never be split or destroyed. But now, they know that atoms are more like clouds of energy, mostly empty space, containing even tinier sub-atomic' particles. Inside an atom At the center of every atom, there is a dense core or 'nucleus' having two kinds of tiny particles protons and neutrons. Around the nucleus, there are even tinier particles called electrons that move around at the speed of light. Size of atoms Atoms weigh about 100 trillionths of a trillionth of a gram and are about a ten-millionth of a millimeter big. The smallest atoms are the hydrogen atoms. Helium nucleus One of the smallest nuclei of an atom is that of an at
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Brain

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  Brain What is a brain? The brain is made of 100 billion tiny nerve cells, each connected with up to 25,000 others. These nerve cells make your brain clever making it to do everything from analyzing the signals coming from your senses to controlling your body and of course thinking. What goes on in the brain? Various things occur in the different parts of the Drain the center of the brain is at the top of the neck where nerves from the spine join it. This is where body functions like breathing and heart rate are controlled. Just behind this IS the 'cerebellum which controls balance and coordination. Wrapped around the outside is the cerebrum where you think, and complex tasks like speaking and actions you decide on are controlled. What is the nervous system? The nervous system is the Day s hot line carrying messages from the Drain to every organ and muscle in the body, and sending back a constant stream of information to the brain about the word both inside and outside
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