Born on January 23

Hideki Yukawa's Birthday

The physicist who imagined the meson.

Next: January 23, 2027

Where it comes from

Hideki Yukawa was born in Tokyo on 23 January 1907, and this Story marks his birthday. He grew up in Kyoto and graduated from Kyoto University in 1929. In 1935, as a young lecturer at Osaka University, he published a paper proposing a new theory of the force that holds the atomic nucleus together, and predicted a new…

How it's celebrated

There is no public observance, but his birthday is a fine day to remember that great ideas can start with a pencil and a question. Students can look up how a particle was predicted on paper years before anyone saw it, and anyone can send a card to a young person who loves science.

Did you know

From 1946 he edited an English-language physics journal from Japan, Progress of Theoretical Physics.

Read the full story of Hideki Yukawa's Birthday

Star sign

Aquarius · January 20 – February 18 · Air sign

Original and independent, a little ahead of their time.

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