As the bicycle is pedaled, a belt connected to its rear rim is coupled to the axle of a generator. As the axle and the wire coils attached to them rotate, the coils inside the generator experience a changing magnetic flux in the field of permanent magnets. A current is thus created via Faraday’s induction law. This current ultimately lights the bulbs. This demo is also a provocative illustration of energy conversion; the potential energy stored in the chemical bonds of the rider’s food is converted to kinetic energy of the bike wheel, and ultimately converted to the electrical energy required to light the bulbs and to the heat dissipated by the rider and light bulbs. A rider can easily light all six bulbs (650 W ~ 1 HP), but cannot easily sustain this peak power output for more than several seconds.