NoHatePhysics

Polarization occure in many way one of them occur due to reflection . When light fall on the surface of a media having refractive index n  it get refracted . The angle of refraction and path can be determined by using Snell's law . Also some of light reflected (absorbed and then radiated) from the surface when the angle between reflected ray and transmitted ray is 90(degree) . The angle of incidents is called Brewster's angle  .  At that point what actually occur at the surface is the dipole that exists on the material act like polarizer absorbing only certain angle polarized light that is absorbing Electric field vector  (E or B) and oscillate with same frequency as of light. Resulting  radiation (According to Maxwell theory) of electro-magnetic wave . But this time the oscillating dipole have only one E vector direction resulting a polarized light .   So the conclusion is that " light reflected from media at Brewster's angle is polariz...

When any source such as light bulbs or sun emit electromagnetic wave . the Electric field direction on the source is randomly generated by that result a unpolarized light . the E vector that generated on the source emission depends upon the direction of motion of charge particle which is completely random .. We use a polarizer to polarize unpolarized light .  Working of Polarizer is very simple it cancel out all E-vector components except that parallel to axis of polarizer that a polarized light .  Malus law relate intensity of polarized light after passing through polarizer with its previous intensity Proof We know intensity of light directly proportional to the square Amplitude .I.e consider the case of bellow image we have the angle between A vector and optical axis of polarizer is thita Resolving those vectors components we have horizontal and vertical components  Now using the above results we conclude that after pas...

When we throw a stone to water we see water ripples on the surface of water . Those ripples have one up wave and one down which is change over time .  In case of light we have electromagnetic waves  are associated with electric and magnetic vectors which are mutually perpendicular to each other and also perpendicular to the direction of propagation .as you can see on the figures various combinations of E and B which are mutually perpendicular to each other and also perpendicular to the direction of propagation of wave . Polarization refers to the phenomenon in which the oscillations of electric vector or magnetic vectors associated with ordinary e.m wave are restricted to just one direction . In other words unpolarized light can have electric vector or magnetic vectors associated with it oscillations in any direction while polarized light has its electric or magnetic vectors oscillating only in one direction . The ordinary (unpolarized ) and polarized light repres...