100% verified The same day, three eras.

23 December

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Contemporary era

1947

Invention of the transistor

On 23 December 1947, Bell Labs demonstrated the first transistor.

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Contemporary era

1888

Van Gogh cuts off his ear

On 23 December 1888, the painter Vincent van Gogh cut off part of his ear in Arles.

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From the Middle Ages to the Enlightenment

1690

Flamsteed observes Uranus

On 23 December 1690, John Flamsteed observed Uranus, mistaking it for a star.

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