Human Powered Electric Guitar

Musician Germ├ín Canyelles uses Low-tech Magazine’s bike generator to power his electric guitar. The guitar amplifier and pedals are plugged into an inverter connected to the 12V circuit of the bike generator. No batteries are used. Recorded at Akasha Hub, Barcelona.

The immutable verities of grand physical laws

Galvanometer

“The design and manufacture of scientific instruments has undergone a radical transformation in the last 30 years, achieving what might be described as the democratization of accuracy. Levers, pinions, wheels, and linkages have given way to microprocessors that read data at exquisite levels of sensitivity and reveal it instantly on digital displays. This transformation has affected our lives far beyond the laboratory, but to my eye the gains have been accompanied by losses.”

Read: The engineer’s art, why a contemporary-art expert also collects old machines.
Picture: Einthoven’s string galvanometer.