Famous for his [[Dossier:Drebbels Perpetuum Mobile|''Perpetuum Mobile'']], Drebbel built and navigated a [[Dossier:Drebbels Submarine|''submarine'']]. Built an incubator for eggs and a portable stove / oven with an optimal use of fuel, able to keep the heat on a constant temperature by means of a [[Dossier:Drebbels Regulator|''regulator / thermostat'']]. Designed a solar energy system for London (perpetual fire), demonstrated air-conditioning, let it rain, made lightning and thunder ‘on command’, developed fountains, fresh water supply for the city of Middelburg. Involved in the draining of the moors around Cambridge (the Fens). Developed predecessors of the barometer and [[Dossier:Drebbels Thermometer|''thermometer'']], the ''"Drebbeliaensch instrument''", harpsichords that play on solar energy. [[Category:Areas]][[Category:Innovations|!]]