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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 / Atom

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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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Earth-the Wonder Planet

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Earth-the Wonder Planet What is Earth? The earth is one of the eight planets that continually revolve around the sun. The planets and the Sun make our solar system. The Earth is the third planet out from the Sun, located between Venus and Mars. The Earth is a sphere made largely of rock. Two-thirds of the surface is covered by water. It is the only planet with oxygen in its atmosphere. The presence of water and oxygen is what makes the Earth a suitable planet for the existence of life. How did the Earth begin?   The Earth was a clouds of gases and dust that circled around the sun about four and a half billion years ago. Then the clouds of gas started to condense and thus formed trillions of small beads. These beads then started to clump together as a single mass due to gravity. This mass is now we live on. Thus the Earth was just a ball of fire a long ago and later it got its hard crust and atmosphere due to gradual Cooling. How were the planets formed?   No-one is absolutely ...
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