LMR-051 · Light
Polarization
Light vibrates in a direction. Some animals can see this.
§ A first look
§ Depths
Six ways into the same idea — from bedtime story to chalkboard. No order required.
L1 · Crayon
Told like a bedtime story.
For a curious 10-year-old. No jargon. Just a picture in your head.
Light is a tiny wiggle moving through space, and the wiggle can go up-down, or side-to-side, or any tilt in between. Most light wiggles every which way at once, like a hyperactive jump rope. But when light bounces off water, or passes through certain materials, only the wiggles going in one specific direction make it through; the others get blocked. Light that's only wiggling in one direction is called polarized. That's exactly how polarized sunglasses kill the harsh glare off a sunny puddle — they only let through the 'wrong' wiggle direction for the glare.
§ Strange but true
- 01Light wiggles in directions. Polarized sunglasses block the horizontal wiggles bouncing off roads and water.
- 02Bees see polarization. They use the sky's pattern as a compass.
- 03The early universe's light is faintly polarized, encoding information about the first instants after the Big Bang.
§ From the field journal
Polarization
"Light vibrates in a direction. Some animals can see this."
— observed, sketched, not yet fully understood.
§ Nearby