Friday, March 6, 2009

Tues, Mar 3, 2009 - Block 3

Polarization

Demos of polarizers.
Only transverse waves can be polarized. Demo with telephone cord and picket fence.

Showed how to calculate the intensity. The intensity is proportional to the square of the amplitude.

Went through some examples with polarizers at different angles and calculated the intensity.

Went outside and used polarizers to view the sky. Light can be polarized by scattering. Also viewed glare showing the light can be polarized by reflection.

Back inside, showed why light is polarized by scattering.
Discussed possible lab on factors that affect polarization by reflection.

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