Day 56: Candy Wave Machine

Astronomy: We’re currently learning about light and the electromagnetic spectrum. Which is why this tweet from Alom Shaha over the Thanksgiving weekend couldn’t have been more perfectly timed:

So on Sunday, I got a pack of 75 kebab skewers, 3 boxes of Dots candy (~150 Dots), and some tape:

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And today I had the students assemble our own wave machine:

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The skewers were spaced 10 cm apart and the whole machine spanned almost 24 feet. Here it is in action:

Pro-tips:

  • Use duct tape. The tape needs to be under A LOT of tension. Weaker tape will just rip.
  • Buy an extra box of candy. We would’ve had about 5-10 more sticks if kids didn’t sneak a few candies to eat.
  • Put an extra layer of tape over the duct tape. (Non-duct tape is fine.) It keeps the skewers from sliding off at large amplitudes.
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About Frank Noschese

HS Physics Teacher constantly questioning my teaching.

2 responses to “Day 56: Candy Wave Machine”

  1. Ismail yaacob says :

    Hi sir… Im still working on my assignment to prove the wave equation based on the candy wave machine. Do mind sharing the ideas to prove it.. Thank You so much
    Ismail
    Malaysia

  2. Ismail yaacob says :

    Hi sir… Im still working on my assignment to prove the wave equation based on the candy wave machine. Do mind sharing the ideas to prove it.. Thank You so much
    Ismail
    Malaysia

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