Measure the speed of light with a chocolate bar

Remember Einstein’s lovely little equation E = mc 2 – the one that wrapped up the Theory of Relativity? The c in that equation stands for the speed of light. Now you can calculate that astonishing speed with just a microwave, ruler, calculator and a chocolate bar!

Grade Range: 6 to 12+

Duration: 1/2 Hour – 1 Hour


  • Microwave
  • Ruler
  • Calculator
  • Chocolate Bar (at least 5″ long)
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