Why Does Light Bend in Glass? - Refraction and Mirages Visualized with Huygens Principle

The video explores Huygens principle, demonstrating how it explains wavefront propagation and its applications in various phenomena like the Doppler effect, Young's double-slit experiment, and refraction. It illustrates wave behavior in 3D, the bending of light, and the occurrence of mirages, emphasizing the principle's utility in predicting wave behavior in different mediums.

What does Huygens principle suggest about each point on a wavefront?

• Each point acts as a source of new waves.

• Each point disappears over time.

• Each point remains stationary.

• Each point moves in a straight line.

How does Huygens principle help in understanding the Doppler effect?

• By visualizing wavefronts from a moving source.

• By demonstrating wave reflection.

• By explaining wave absorption.

• By showing how waves slow down.

In the context of Huygens principle, what happens when light enters a different medium?

• It speeds up and travels in a straight line.

• It reflects back completely.

• It slows down and bends.

• It stops moving.

What is the effect of refraction on light as it moves from air to water?

• Light slows down and bends.

• Light speeds up and travels straight.

• Light stops completely.

• Light reflects back into the air.

How does Huygens principle explain the bending of light in water?

• Light does not bend in water.

• Light travels faster in water.

• Light travels slower in water, causing it to bend.

• Light reflects completely in water.

What causes the mirage effect on hot days according to Huygens principle?

• Light travels in a straight line.

• Light bends due to temperature-induced refraction changes.

• Light reflects off the ground.

• Light stops moving near the ground.

Why do mirages appear on roads during hot weather?

• The road reflects the sky.

• Light travels faster on hot surfaces.

• Light bends due to varying refraction indices.

• The road absorbs all light.