Deaths on April 13

Annie Jump Cannon

Died on April 13, 1941

Annie Jump Cannon, American astronomer and academic (b. 1863)

Annie Jump Cannon (; December 11, 1863 – April 13, 1941) was an American astronomer whose cataloging work was instrumental in the development of contemporary stellar classification. With Edward C. Pickering, she is credited with the creation of the Harvard Classification Scheme, which was the first serious attempt to organize and classify stars based on their temperatures and spectral types. She was nearly deaf throughout her career. She was a suffragist and a member of the National Women's Party.

References

Annie Jump Cannon

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Events on 1941

17 Mar

Franklin D. Roosevelt
In Washington, D.C., the National Gallery of Art is officially opened by President Franklin D. Roosevelt.
26 Jul

French Indochina
World War II: In response to the Japanese occupation of French Indochina, US President Franklin D. Roosevelt orders the seizure of all Japanese assets in the United States.
17 Sep

Great Patriotic War
World War II: A decree of the Soviet State Committee of Defense, restoring Vsevobuch in the face of the Great Patriotic War, is issued.
12 Dec

Hungary
World War II: The United Kingdom declares war on Bulgaria. Hungary and Romania declare war on the United States. India declares war on Japan.
14 Dec

Thailand
World War II: Japan signs a treaty of alliance with Thailand.

Deaths on April 13

Annie Jump Cannon

Died on April 13, 1941

References

Choose Another Date

Events on 1941

Franklin D. Roosevelt

French Indochina

Great Patriotic War

Hungary

Thailand