In 1746, the world stood on the edge of a mystery that no one could quantify. Science was in its infancy during the mid-18th century, and the nature of electricity was more of a magic trick than a mapped-out force.
Jean-Antoine Nollet was a man of both faith and physics. Known as Abbé Nollet, this French clergyman was determined to prove that the flow of electricity was not a slow leak but something much faster.
He needed a way to measure the invisible. He needed a human circuit to prove his theory.
Nollet gathered two hundred Carthusian monks at a monastery in Paris. These men of God were about to become servants of science.
He arranged them in a massive circle that stretched for over a mile. Each monk was connected to the next by iron wires and brass rods held in their hands.
It was a strange sight to behold. A chain of 200 men standing silent in a circle nearly 1.6 kilometers long.
At the start of the line, Nollet prepared his secret weapon. It was a Leyden jar, an early device used to store a massive electrical charge.
But the monks had no idea what the sensation would truly feel like. They waited in the quiet courtyard for the experiment to begin.
Nollet discharged the jar into the first monk in the line. He expected a delay as the energy traveled down the mile-long wire.
But the result was instantaneous. Every single monk in the line reacted at the exact same moment.
They didn't just feel it. They jumped. They flinched. They gasped.
He saw their shock. He saw their confusion. He saw their realization.
Nollet concluded that the speed of electricity was essentially unlimited. To the human eye, it was too fast to measure with the clocks of 1746.
Word of the shocking success spread quickly through the halls of French power. Eventually, King Louis XV himself demanded to see the spectacle.
The King didn't use monks. He ordered 180 of his Royal Guards to stand in a line at the Palace of Versailles.
When the charge hit, the elite soldiers all leaped at the same time. The King was stunned by the power of this invisible force.
This experiment paved the way for the telegraph and the modern grid. It proved that distance was no match for the speed of the electron.
Today, we flip a switch and light instantly fills a room. We owe that simple luxury to a French priest and a mile of brave monks.
Sources: IET Archives / Institute of Physics Spark
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