4.5.2　Experimental instruments

Polarizers(or Nicol prisms);Half-wave Plates;Quarter-wave Plates;Silicon Photocell;Millivoltmeter;Helium-Neon Laser.

Polarizers light tester(SGP-5)is shown in Figure 4.5.1.(https://www.daowen.com)

Figure 4.5.1　Polarized light tester(SGP-5)