At exactly 1 o'clock 05 minutes, on the night of December 29-30, 1902, almost all pendulum clocks stopped in Paris.
Describing this inexplicable phenomenon on its pages, the first issue of the journal "Bulletin of Knowledge" for 1903 said that many Parisians felt dizzy, accompanied by nausea and fainting.
The director of the central meteorological station in Paris then officially announced that no atmospheric anomalies had been observed for all this time. Seismographs have not recorded a single case of ground vibration. Most interestingly, the "Parisian crash" stopped only the pendulum mechanisms. The "spring clock" continued its work as usual.
Everyone knows that a pendulum in a clock oscillates under the force of gravity. Such a simultaneous stop of all pendulums could have happened if, for example, that night in Paris, the force of gravity were removed in one fell swoop, and all the inhabitants would be in a state of weightlessness, and accordingly the pendulums too. The same option would be possible if the entire geographic area were in a state of free fall overnight.
Since this is practically impossible, it remains to assume that oscillations have arisen, in phase opposite to the oscillations of the pendulums, when summed up, they mutually annihilated. It would be interesting to know whether the famous Foucault pendulum stopped at the same time.
With any of these options, a person would naturally feel dizzy and nauseous, just like when we are upside down, for example. The French were very scared, and every now and then they tried to find out what had happened to them. Until now, not a single such case has been recorded in the world, and many fantastic guesses are being built around its nature - from the violation of cosmic matter to the pampering of aliens. Surely, we will never know the truth about the Paris crash.