If you’ve ever wanted those glow in the dark stickers, you will love this activity! Kids will be able to learn about ultra violet light and florescence by making glow in the dark Jell-O!
You can think of light as a wave and as it propagates, it also vibrates. Light from a light bulb, flashlight, or even the sun vibrates in all directions as it propagates. A polarizer only allows light that is vibrating in a certain direction pass through.
Light that reflects off of a horizontal surface vibrates in the horizontal direction (polarized horizontally). So if the polarizer is oriented vertically, it will block that reflection. This is how polarized sunglasses block glare. Now take a look around and see if you can other sources of polarized light.