Joel has some polarizing filters. He knows that the filters absorb some of the light that strikes them, and the light that passes through is polarized in one direction.
Joel then passes a beam of light through two filters. He finds that by twisting one
with relation to the other, he can reduce the amount of light. At one point, the
second filter completely absorbs the light that passes through the first filter. Which
two filter angles does he use? What is the effect he sees?
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2. Joel leaves the two filters as they were in Question 10. He then puts a third filter
between the first two. Explain what he sees when the third filter is at 45°.
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