π¬ The transistor is first demonstrated (1947)
Where: Bell Labs, Murray Hill, New Jersey
Nearby on the globe: Statue of Liberty β π Open the 3D globe
π On This Day: December 23
December 23, 1947: The transistor is first demonstrated. On this day in 1947, scientists at Bell Labs in the USA first showed their colleagues a new device: the transistor. A transistor is a tiny switch that can turn electrical signals on and off or make them stronger. A single smartphone chip today holds billions of them.
β¨ More events on this day
- 1823 π¨ The poem 'A Visit from St. Nicholas', better known as ''Twas the Night Before Christmas', was first published. It helped shape how people imagine Santa Claus.
- 1893 π¨ Engelbert Humperdinck's opera Hansel and Gretel was performed for the first time in Weimar, Germany. It became a favourite family show at Christmas time.
- 1954 π¬ Doctors in Boston carried out the first successful kidney transplant, moving a healthy kidney from one twin brother to the other.
π§ Question of the day
What does a transistor do?
- It boils water
- It is paper for printing photos
- It switches electrical signals on and off
Show the answer
Answer: It switches electrical signals on and off
π Landmarks that opened on December 23
Questions
What happened on December 23?
December 23, 1947: The transistor is first demonstrated. It happened in Bell Labs, Murray Hill, New Jersey.
Which landmarks opened on December 23?
Tokyo Tower (opened 1958).
In the game, the "Today on Earth" panel shows this story on its day, with a question to answer and a place to fly to.
More days in December
- December 1
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