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5 Stories Published
Physics at Home
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7m
Measure Earth’s Magnetic Field With a Phone Magnetometer
Answers to common questions on measuring Earth's field with a phone: expected strength, a flip trick that cancels sensor offset, what disturbs…
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7m
Measure Gravity With a Phone and a Pendulum
A walkthrough for finding g with phyphox and a string: the formula, a T-squared graph, how to cut swing-angle and length errors,…
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7m
Build a Spectroscope and Identify Common Light Sources
Two ways to build a diffraction-grating spectroscope, how to calibrate it with a fluorescent lamp, and a table for reading LED, CFL,…
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7m
Measure the Speed of Light With a Microwave and Chocolate
Find the speed of light from melted chocolate spots and the frequency on your oven's label, with a worked calculation, safety notes…
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7m
Build a Diffusion Cloud Chamber and Watch Cosmic-Ray Tracks
A parts list, build steps and safety notes for a dry-ice diffusion cloud chamber, plus a guide to telling muon, electron and…