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Shadow Size Trick

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Shadow Size Trick

Description

Explore atmospheric lighting at home after the candlelit concert. Use a torch and a familiar object to make a shadow grow and shrink without changing the object.

What to prep

  • Torch with secure battery compartment
  • Large toy
  • Optional paper and removable tape
Cost: FreeBest time: Anytime

Play guide

  1. 1Place a familiar object, such as a large toy, between a torch and a plain wall in a dim room.
  2. 2Keep the object still and move the torch nearer or farther. Each predict which move will make the shadow larger, then test it.
  3. 3Swap torch-holder and predictor. Try making one shadow fit inside a paper outline taped to the wall.

Success signals

The pair changes a real lighting distance and compares the resulting shadow size.

If it's tricky

A wall is unavailable: use a sheet of paper propped safely on a table as the screen.