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Bend the Beam

This simulation series is based on concept of Refraction and total internal reflection. Light bends when it passes from one clear material into another. Past one wide angle it cannot get out at all. The surface then sends the whole beam back.

Physics · Class 12 · Refraction and total internal reflection · 8 simulations. For JEE, NEET and your boards.

A picture of the Bend the Beam simulation

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What you'll learn

  1. Into the glass A beam must run at a set angle inside glass. Find the angle it needs in air.
  2. Pole in the pool A pole stands in a pool. Find its height above the water from its shadow on the floor.
  3. Shift through a slab A beam crosses a glass slab. Find how far sideways it comes out.
  4. Just grazes A beam inside glass meets the top face. Find the angle at which it just grazes out.
  5. From two speeds Light runs at different speeds in two materials. Find the side and the angle that trap it.
  6. Stacked layers A beam starts in glass under a stack of layers. Find the angle in the glass that just grazes the top layer.
  7. Into the fibre Light enters the end of a fibre. Find the widest angle that still stays inside.
  8. The slowest ray A pulse of light runs down a guide. Find how long its slowest trapped ray takes.