Conti

Radiometric clock.

This clock takes the principle that made the Chronolith work and improves it: knife edges suspensions instead of springs, laser guidance, better watertightness, etc. Two lamps placed on either side light up alternately, thus “pushing” the pendulum each time. The inside of the tube is under a vacuum of about 0.01 bar. The entire clock is mounted without screws or bolts and is only held together by the 7.7 tons of atmospheric pressure exerted on the glass wall. In order to dismantle it, it is only necessary to let air into the tube.
Its purpose was to become a photonic pendulum the day I would have a vacuum pump capable of ensuring a perfect vacuum inside, but I never had the means to afford it.
This clock was then downgraded to an electromagnetic pendulum in 2010 but can still function as a radiometric pendulum and could still be upgraded to photonic propulsion.