sExperiments that are an essential part of the scientific method must often be mobile, conducted in remote locations or in conditions isolated from disturbing laboratory influences. Isolated experimentation must carry with it or harvest from its surroundings the energy needed to generate, collect, process, store, or transmit data.
In alphabetical order, the readily available, longer-term power sources are batteries, mechanically powered generators, photovoltaic cells, thermoelectric piles, and thermoelectric ...
