Skip to main content

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.        
Labels:

Comments

Post a Comment

Popular posts from this blog

THE EARTH, A SUPER ORGANISM

     JOIN MY COURSE: "Become a programmer in a day with python"       A man called 'love lock' (what a name) proposed a theory called Gaia theory, named after Greek Goddess.      It says, "Earth is a self-regulating organism like a human being.  The organic life in it interacts with in-organic matter and maintains atmosphere, temperature and environment".  Hence the earth is still suitable for the life to thrive.      Imagine, in a particular place, there are lot of flowers.  Some flowers are white and some are darkly coloured.  We know, white reflects light and heat while dark absorbs the same.  White flowers can thrive in hot climate.  But dark flowers requires cold climate.  The absorption and reflection balances and the environment reaches average, warm temperature at which both the flowers can co-exist.  This is the essence of "Gaia" theory.      On our earth, ...
3 comments
Read more

DISORDER IS THE "ORDER OF THE DAY"

         Imagine a balloon full of air.  The air molecules are moving randomly inside the balloon.  Let us pierce the balloon with a pin.  The air rushes out.  Why should not the air molecules stay inside the balloon safely and ignore the little hole?  That is not the way the world works.  The molecules always "want to occupy as many states as possible".  Hence the air goes out in the open to occupy more volume.   The things always goes into disorder (entropy) and the disorder increases with time.  The above statement is what we call "second law of thermodynamics".      Consider a cup of coffee on the table. Suppose the heat from entire room flows to your cup of coffee, the coffee will boil and the rest of the room will freeze.  Freezing means bringing things to order and arrangement.  It violates the second law.  Hence it will never happen.  Hence heat must flow from high ...
Post a Comment
Read more

CASINO'S GAME

           Let us find out how the casino survives with mathematics.      Say, your friend invite you for a game of dice.  You must bet (wager) 2 dollars.  If you roll 'six' you will get back 8 dollars.  The game will go on for 30 rounds.  All sounds good.      The probability of rolling 'six' is 1/6.  Since the game will be played for 30 times, the 'expected win' is 30*1/6 = 5.  That is, you are expected to win 5 rounds out of 30.  Hence your gain will be 5 * 8 =40 dollars.  ok.  This also implies that you will loose 25 rounds.  Hence your loss will be 25*2 =50 dollars.  Your net gain will be gain-less = 40-50 = -10 dollars. For 30 rounds, the loss is -10 dollars, Hence, for one round =-10/30 = -1/3 dollars.  There will be a loss of -1/3 or 0.33 dollars per round.  It is not a fair game.     Let us make a simple formula to calculate  'Pa...
4 comments
Read more