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GOD'S PARTICLE 2.0

 
ELECTRONS AT WORK


 Electron was discovered by J.J. Thomson  more than 100 years ago.  It is said to carry negative charge and negligible mass.  It is present in all the elements

      When electron flows in a conductor, it is electric current.  We know, nothing serves like electricity.

      Around the moving electrons magnetic field is formed and it gives rise to electromagnet.

   When the electron oscillates electromagnetic waves like radio waves are radiated.  It is used for communication purpose.  

  While the electrons are moving in a conductor, they collide with the atoms and produce heat.  Many heating devices are made using this principle.

  In atoms, when electron jumps from higher orbit to lower orbit, it loses energy in the form of light waves, X-rays etc,.

   When the electrons moves in the magnetic field  at an angle, it experiences a force called Lorentz force.  This force is responsible for the working of motors.

      The electrons in the outer most orbit(valence electrons) of an element's atom forms bond with other atoms and make variety of molecules(NaCl, HCl).

  In the old TV monitor(cathode ray tube), the electron beam strike , scan the screen and creates picture.  That is, when electron hit the florescent screen, light is emitted.

      When light hit certain material, electrons are ejected.  (photoelectric effect).  When the light image falls on the retina of the eye, electrons are emitted and electrical signal is sent to the brain.  A digital camera also works on this principle.

      The electronic element like transistor, diode, FET manipulate the flow of electrons and help us to create useful circuits and devices.  

      When the electron move very fast, it behave likes waves.  This electron wave is smaller than light waves.  Hence we build electron microscope to observe very tiny objects like virus, molecules etc,.

 The invisible electron is invincible.
  
Science update:  French mathematician Yves meyer has been awarded in the 2017 abel price Rs. 4.6 crorer for his work on wavelets with applications in data compression and medical imaging.        

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