January 23, 2026
posted on: Friday, January 23rd, 2026, 0:01
Paul Langevin image from
Wellcome Collection under
the Creative
Commons Attribution 4.0 International License.
Today is the birthday of
- Paul
Langevin (1872-1946).
- Hideki Yukawa (1907-1981).
© 2026 Stefan Hollos and Richard Hollos