Solution Found!
You want to check the time while wearing your Polaroid
Chapter 25, Problem 5CQ(choose chapter or problem)
Problem 5CQ
You want to check the time while wearing your Polaroid sunglasses. If you hold your forearm horizontally, you can read the time easily. If you hold your forearm vertically, however, so that you are looking at your watch sideways, you notice that the display is black. Explain.
Questions & Answers
QUESTION:
Problem 5CQ
You want to check the time while wearing your Polaroid sunglasses. If you hold your forearm horizontally, you can read the time easily. If you hold your forearm vertically, however, so that you are looking at your watch sideways, you notice that the display is black. Explain.
ANSWER:
Step 1 of 3
The Polarized sunglasses have a polarization axis. Similarly, the watch has its own polarization axis.When you keep the forearm horizontally, the two polarization axes get aligned and thus the reflected light from the watch passes through the sunglasses.