The discovery of pyroelectricity.

definition

Pyroelectricity is the ability of crystallised nonconducting materials to generate a temporary voltage when the entire crystal is heated or cooled.

DISCOVERY

Around 314 BC, the Greek philosopher Theophrastus discovered the effect when he saw that the mineral tourmaline (most probably) attracted straws and bits of wood when heated.

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discoverer

Here is a statue of Theophrastus:

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(circa 371 BC-circa 287 BC )

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