POLARIZATION OF LIGHT AND VERIFICATION OF MALUS LAW
Item Code : SK045
Principle and Working:
When a light beam passes through a polarizer filter, it becomes linearly polarized. As this linearly polarized light passes through an analyzer, its intensity depends on the angular position of the analyzer. Maximum light intensity is transmitted when the optical axes of the polarizer and analyzer coincide.The intensity of the transmitted beam depends on the angle (θ) between the optical axes of the polarizer and analyzer and is defined by Malus’s law as: I = I0 cos² θ
where I is the intensity of the transmitted light, and I0 is the intensity of the incident light.
- Pin hole with silicon photo detector.
- He-Ne laser with built-in power supply
- Heavy, rigid and stable Optical bench
- Saddle can hold rod from 8 to 15mm.
- Height and level adjustment screws
- Analyser/Polayser with 0 ± 90° graduation.
- To measure the light intensity of plane polarized light as a function of the analyzer position.
- To verify Malus law.
- To verify inverse square law
- Optical bench : Length – 1 mtr. with Scale, 4 point levelling. Material Aluminium or MS.
- Transversal slider : 25 – 0 – 25mm, LC 0.01mm.
- Polarizer : Angle (0 ± 90°), LC 1°, Aperture 21mm, Frame 130mm, Rod 10 mm.
- Fixed slider : Base width 50mm, H 115mm.
- Laser : He-Ne Laser (632mm), Power 2 mW, Beam spot 2.5mm, current 4mA ~ 6mA, Dimension 300 x 62 x 82mm, Weight 1.5 kg (approx.).
- Photo detector : Silicon photocell, 4mm safety socket, Aperture 1mm, rod 10mm dia.
| S.No. | Item Name | Quantity |
|---|---|---|
| 1 | Transverse Slider | 1 |
| 2 | Fixed Slider | 2 |
| 3 | Fixed Slider (Large) | 1 |
| 4 | Optical Bench with Levelling | 1 |
| 5 | Laser He-Ne | 1 |
| 6 | Digital Multimeter 4½ Digits | 1 |
| 7 | Polarizer/Analyser | 1 |
| 8 | Pin Hole Photodetector | 1 |
| 9 | Flexible Plug Led 50cm (Black) | 1 |
| 10 | Flexible Plug Led 50cm (Red) | 1 |
Note : The standard supply is the Hexagonal Optical Bench (MS). To request the Triangle Optical Bench (Aluminium Extrusion), please specify in your request.