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Transmitting Sound on a Light Beam  

Procedure Part 1:

We will use a magnifying lens and an empty paper towel roll to create a lense.

Materials / Part 2 / Main Page



Step 1:

  • Find the focal length of your magnifying lens.
    • Hold the lens above a piece of paper under a light.
    • Move it until the light focuses onto a piece of paper.
    • Measure the distance from the paper to the lens.


Electronics Experiments Procedure


Step 2:

  • Cut the empty paper towel roll to the lens focal length.


Electronics Experiments Procedure


Step 3:

  • Use masking tape to tape the lens onto one end of the cut towel roll.

Electronics Experiments Procedure

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