Field Bikes was created in 1993.
Focus Bikes was created in 1992.
Marin Bikes was created in 1986.
Ideal Bikes was created in 1926.
Surly Bikes was created in 1998.
Merida Bikes was created in 1972.
Orange Mountain Bikes was created in 1988.
Wilderness Trail Bikes was created in 1983.
Norco Performance Bikes was created in 1964.
Da Bomb Bikes was created in 1998.
A dynamo's axle pressed against and is turned by the bikes wheel. This turning moves wires in an magnetic field. This motion of wires in the magnetic field creates electricity to power the bike lights. The Law of Conservation of the Electromagnetic field, in particular Faradays Law, is the basis of this.
man there are thousands
look at the timeline on the kona site