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Can we see an atom

Can we see an atom It is not possible to see the atoms, but the nearest possibility is its direct evidence with the help of the following techniques: Electron Microscope: An ordinary optical microscope is used to see the object of the size up to 500 nm. This microscope uses visible light.  The electron microscope uses beams of electrons. So it can measure the object of size nearly to the size of an atom. It can measure the size of an object more than 15 million times. X-Ray X-Ray diffraction pattern obtained from diffractometer has made us able to believe the existence of the atom Further study: Click it Get True Knowledge
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Size and Mass of an atom

Here we discuss the size and mass of an atom. Size of atom: First, we discuss the size of an atom. It has been observed by the x-ray work in the 20th century,  that size of atoms is so small that it can be imagined by the following calculations. a) The diameter of the atom is of the is of the order 2 multiply 10 over raised power -10 m . in nanometers 0.2 nanometer. b) A man breathes approximately 10 power raised to 5 million atoms in a deep breath. c) If atoms are joined together in a line, two million atoms will be required to cover a full stop.    
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What is Computer?

It is believed that man designed aeroplane by observing birds. Therefore the basic principles of flying aeroplane are same as that of birds. It is true that computer is not a human. However, the computer has been engineered to imitate some of basic functions of humans performs. Suppose someone asks you which is capital of Egypt? You will engage these steps: first Hearing that's INPUT and recall to your mind that's PROCESSING and finally you say Cairo is capital of Egypt that's OUTPUT. Similarly a computer is function like that. The input devices are mouse or key board. Processing the data is CPU (central processing unit) and out put Devices are LCD, Monitor or Printer. Figures or facts we feed to the computer through input devices in raw form called Data. CPU process them and show on output devices called information For my whole blog study... Click following hyperlink                             Get True Knowledge
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