Births on September 30

Jean Baptiste Perrin

Born on September 30, 1870

Jean Baptiste Perrin, French-American physicist and chemist, Nobel Prize laureate (d. 1942)

Jean Baptiste Perrin (30 September 1870 – 17 April 1942) was a French physicist who, in his studies of the Brownian motion of minute particles suspended in liquids, verified Albert Einstein’s explanation of this phenomenon and thereby confirmed the atomic nature of matter (sedimentation equilibrium). For this achievement he was honoured with the Nobel Prize for Physics in 1926.

References

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Events on 1870

15 Jan

Thomas Nast
A political cartoon for the first time symbolizes the Democratic Party with a donkey ("A Live Jackass Kicking a Dead Lion" by Thomas Nast for Harper's Weekly).
30 Mar

Reconstruction Era
Texas is readmitted to the Union following Reconstruction.
12 May

Royal Assent
The Manitoba Act is given the Royal Assent, paving the way for Manitoba to become a province of Canada on July 15.
18 Jul

Papal infallibility
The First Vatican Council decrees the dogma of papal infallibility.
19 Sep

Siege of Paris (1870-71)
Franco-Prussian War: The Siege of Paris begins, which will result on January 28, 1871 in the surrender of Paris and a decisive Prussian victory.

Births on September 30

Jean Baptiste Perrin

Born on September 30, 1870

References

Choose Another Date

Events on 1870

Thomas Nast

Reconstruction Era

Royal Assent

Papal infallibility

Siege of Paris (1870-71)