Exp-1 To Measure the light intensity of plane polarised light as a function of the analyzer position.
Exp-2 To study the polarization of light by quarter wave plate.
Exp-3 To study the polarization of light by two quarter wave plate.
Exp-4 To verify the inverse square law.
Exp-5 To verify Malus-law.
Principle and Working :
A wave plate or retarder is an optical device that alters the polarization state of a light beam traveling through it. In the present setup, halogen light source with yellow light filter passes through a polarizer to produce linear polarized light. This polarized light then falls on a quarter wave plate L/4. The emergent light passes through analyser. It is investigated at different angles of L/4 plate ( 0°, 30°, 45°, 60° and 90°) between the optic axis of the wave plate and the direction of the incident light. The light intensity can be investigated with the analyser over the range -90° to +90°. At 0° and 90° of L/4 with respect to optic axis, the transmitted light is linearly polarized, at 45° it is circularly polarized, and at 30° and 60° it is elliptically polarized.
|Cat No.||Item Name||Qty.|
|SW840||Halogen light source||1|
|SL801||Polarizer / Analyzer||2|
|CD499||Quarter wave plate||2|
|CD542||Light sensor holder||1|
|R7903||Yellow light filter||1|
* Additionally Required
Computer is not supplied with this setup.