On the other hand, you do not need any kind of power source to use a tape measure. Since laser measurement technology is so old, you could find laser distance meters from just about any source.

Caltech scientists are developing laser-driven lightsails that could push spacecraft beyond our solar system. Their research ...

This allows [Giovanni] to see plots of live and historical data from the power meter via his smartphone. A project like this one is a great way to explore saving energy, particularly if you live ...

Gentec-EO is pleased to officially announce its latest innovation for the laser market that will help many make laser power measurements faster and easier. Gentec-EO's BLU app ...