XII ] ATOMIC ENERGY
Energy, E = m c-squared
where c , the speed of light ≈ 299 792 km per second,
M = the mass converted to its equivalent energy , E !!!
Genius Einstein in the National Geographic video series ! Studying about the genius is also a great learning !
ARE RUSSIAN NUKES THE MOST POWERFUL? -->> 
Atomic Energy show-4
Atomic Energy show-5