Designed by FluxxLab, the Revolution Door harnesses the otherwise wasted kinetic energy of revolving doors, and converts it into electrical energy.
Existing revolving doors already use gearing or highly viscous fluid to dampen their spin. The kinetic energy is dissipated in these systems so the door spins within a relatively predictable range of speeds, preventing malicious people from pushing the door into other people.
The difference here is that the internal resistance of the generator serves as the dampener, thus generating electricity.
Kinetic energy is a scalar quantity; it does not have a direction. Unlike velocity, acceleration, force, and momentum, the kinetic energy of an object is completely described by magnitude alone.
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