Hands-On Science

These are intended to be short vignettes of interesting, practical science and technology accessible to middle-school and high-school students.

Not enough emphasis these days on building real hardware, observing real effects, playing with real data. Much can be done with small resources.

Interferometry 1: Make a Two-Beam Interferometer: See the wave nature of light with pinholes in aluminum foil.

How to Set Your Wristwatch to Extremely High Accuracy: Ordinary LCD wristwaches can be accurate to one or two seconds a month, though they're rarely that good right out of the box. Here's how to fine-tune them. Never lose another "whose watch is correct?" argument.