it has the properties of a wave (:
The wave model. More specifically, it shows that light is a transverse wave - a longitudonal wave can't be polarized.
For plane polarized light the electric vector of the light ray is allowed to vibrate in a single plane, producing a simple sine wave with a vibration direction lying in the plane of polarization - this is termed plane light or plane polarized light.
unpolarized light = light waves vibrate in more than one plane Polarized light = vibrations of light waves occur in a single plane.
Sound wave is a mechanical wave. It means that, for propagation, it badly needs a material medium. But, light waves are not mechanical waves. They are electromagnetic waves. It does not need a material medium. It can pass even through vacuum. Sound wave is longitudinal in nature where as light waves are transverse in nature. Being transverse, light can be polarized. But, sound waves being longitudinal cannot be polarized.
Linearly polarized light passed through a quarter-wave plate at a 45 degree angle to the optic axis becomes circularly polarized
For polarization the direction of the oscillation has to be perpendicular to the direction of travel. In sound waves, which are longitudinal waves, this isn't the case and thereby can not be polarized.
linearly polarized
Such light is said to be polarized.
No. Light bulbs produce non-polarized light.
Circularly polarized light is obtained by adding two plane polarized lights of same intensity that are orthogonal but with a phase difference of 90 degrees.
If one polarizing filter is angled 90 degrees from the other, they will block all light.