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Level 0 · Phenomena · Unit 1 of 3

Three polarizers

about 5 min · Free · No sign-in needed

A polarizer lets through only light that vibrates along its axis. Put two polarizers at right angles and the screen goes dark. Now slide a third polarizer in between them. Before you run it, predict what the screen will show.

  1. 1. Predict
  2. 2. Run
  3. 3. Rules
  4. 4. Redraw
  5. 5. Explain
  6. 6. Done

Prediction 1 of 2

Simulated

Predict first, then run it.

Light source0°90°Screen?
Setup
45°

Run the experiment to see the result.

Two polarizers, at 0° and 90°. How much light reaches the screen?

Clears this unit's progress and drawing record on this device.