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stefan3423

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## Homework Statement

An angle is given between 2 polarizer's (45 degrees), through them light passes (unpolarized than after passing through the first one it polarizes), some of the light its shown on the display. For how much does the angle needs to be increased for the intensity of light to be 2 times less if the starting angle is 45 degrees.

Given Var:

α=45°

## Homework Equations

I=I

_{0}cos

^{2}α

## The Attempt at a Solution

The answer in textbook:[/B]

α

_{2}-α

_{1}=+15°

My work:

My answer:(Side note I have a little error instead of II2 its I2, everything else is correct).

#### Attachments

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