Author/Title Polytec Inc. Tustin, Calif. Laser Doppler vibrometers (LDVs) measure vibrations where other sensors can't. They accurately track up to 30 Author/Title Polytec Inc. Tustin, Calif. Laser ...

This is our second activity that requires the use of a smartphone or tablet. Please let us know what you think. E-mail editors@sciam.com with feedback about the use of technology in this—and ...

A foot-candle is a standard light measurement, even though these days candles are mostly ornamental (except during windstorms). The amount of light given by a candle one foot away is used to measure ...

The fact that so many people are stuck at home makes for strange opportunities. Italy’s confined populace has taken to singing from the balconies — and now researchers are asking them to use those ...