PIRA: 6A60.30

 

Lab Equipment  Directions
  1.  Round bottomed flask with water
  2. Petri dish support
  3. Short candle with holder
  4. Matches
  5. Screen
  1.  Set the flask between the screen and the candle.
  2. Move the screen (and/or candle) back and forth until the image comes in sharply.
 
(the focal point can be predicted using thick lens equation)

cp