It doesn’t take expensive or sophisticated equipment to carry out a speed of light experiment at home or in the classroom. You can measure the speed of light with nothing but a laser, a protractor and a slab of gelatin, is inexpensive and surprisingly accurate!
Grade Range: 9-12
Duration: 45-60 Minutes
- Classroom Safe Laser Pointer or Laser Blox (red or green)
- Clear Gelatin
- 360 degree protractor
PS4.A: Electromagnetic Radiation
- Use mathematical representations to support a claim regarding relationships among the frequency, wavelength and speed of waves traveling in various media. (HS-PS4-1)