Duvet you say, in the USA, no way!

On a street near you ... where you used to live

Let there be light!

 5mw red laser, just needs 3v, yellow is signal driving laser (1us pulse every 10us), blue is output from photodiode detector

Sometimes waffling is a virtue

Wo gehen wir?

These boots are made for spazieren.

new toy

dropping a magnet through a coil

Who let the dogs out?