iPad *100% 2:28 PM ? learn.vccs.edu Procedure Part I - Crossed Polarizers Qualit
ID: 1731893 • Letter: I
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iPad *100% 2:28 PM ? learn.vccs.edu Procedure Part I - Crossed Polarizers Qualitative 1. Place one polarizing filter on top of the other so that light is transmitted. 2. With two filters together and aligned so that light passes through them, look through them at a bright light such as a strong flash light or desk lamp. 3. Slowly rotate one of the filters through 360° while keeping the other one still. Observe and record what happens. Part Il - Crossed Polarizers Quantitative 1. Place one polarizing filter on top of the other so that light is transmitted. Attach a clothes pin to each side of the bottom edge of the combined filters. The clothes pins should support and allow the filters to rest perpendicular to a table top where you will place them. Arrange a photocell- also called a CdS cell since it contains cadmium sulfide - behind the filter assembly so that the photocell's light-sensitive surface is unobstructed and faces the Polaroid filter assembly about 5 to 10 cm away from the center of the filters. It may be necessary to support the photocell or tape it to something such as a drinking glass to get it in proper position. The illustration below shows the basic configuration you need to achieve. 2. DMM CdS cell Polarizing filtersExplanation / Answer
A.
Take two sunglasses and keep one on the other. Rotate one sunglass and observe the light passing through it. If the light remains unchanged during rotation, it is not polarised. If it varies then it is polarised.
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