of electron: An important scientific discovery
Electric field can only be influenced (attract or repel)
by electric field and magnetic field can only be
influenced by magnetic field. But electrons can be
influenced by both electric field and magnetic field..More...
Structure of atom
The gold foil
experiment performed by Hans Geiger and Ernest Marsden
in 1909 under the supervision of
Rutherford proved that
atom has a central positively charged nucleus and most
of the mass of an atom is concentrated in the nucleus
is radio wave?
radio transmitter circuit produces radio waves when the
free electrons (or mobile electrons) in the circuit
oscillate. The frequency of an emitted radio wave is the
frequency of the oscillation of the electrons..More..
How is light emitted by an atom?
An atom emits radiations when the electrons in the atom
are excited. The electrons in an atom are situated in
“shells”. Each shell has its own unique resonant
frequency. When a shell is excited, it will oscillate in
its resonant frequency..More..
is nuclear energy released?
The electron-positron pair production, when a high
energy photon (with energy of 1.022
MeV) interacts with a heavy atom indicates that,
in appropriate conditions, space matter can be..More..
Space matter/ aether
1887 Albert Michelson and Edward Morley performed
“interferometer” experiment aimed at detecting the
relative motion of matter relative to the ‘stationary
luminiferous aether’ known as the Michelson–Morley