Physics · Waves
Measure the speed of sound with two phones
Use two phones with an acoustic stopwatch app to time a clap over a known distance.
- Easy
- 1–3 hours
- Free
606 projects · 13 streams · every class
Physics projects you can measure: motion, light, sound, heat, electricity and magnetism. Each project gives the materials, the steps and the calculation behind the result.
3 Physics projects
Physics · Waves
Use two phones with an acoustic stopwatch app to time a clap over a known distance.
Physics · Magnetism
Use the phone's magnetometer to measure how field strength falls with distance from a magnet.
Physics + Music, Theatre and Writing
Measure how the length of a string or the water level in a bottle changes the pitch.
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