Births on May 21

Hans Berger

Born on May 21, 1873

Hans Berger, German neurologist and academic (d. 1941)

Hans Berger (21 May 1873 – 1 June 1941) was a German psychiatrist. He is best known as the inventor of electroencephalography (EEG) in 1924, which is a method used for recording the electrical activity of the brain, commonly described in terms of brainwaves, and as the discoverer of the alpha wave rhythm which is a type of brainwave. Alpha waves have been eponymously referred to as the "Berger wave."

References

Hans Berger

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Events on 1873

18 Feb

Vasil Levski
Bulgarian revolutionary leader Vasil Levski is executed by hanging in Sofia by the Ottoman authorities.
22 Mar

Slavery in the Spanish New World colonies
The Spanish National Assembly abolishes slavery in Puerto Rico.
1 Jul

Canadian Confederation
Prince Edward Island joins into Canadian Confederation.
4 Aug

7th Cavalry Regiment
American Indian Wars: While protecting a railroad survey party in Montana, the United States 7th Cavalry, under Lieutenant Colonel George Armstrong Custer clashes for the first time with the Cheyenne and Lakota people near the Tongue River; only one man on each side is killed.
20 Oct

Princeton University
Yale, Princeton, Columbia, and Rutgers universities draft the first code of American football rules.

Births on May 21

Hans Berger

Born on May 21, 1873

References

Choose Another Date

Events on 1873

Vasil Levski

Slavery in the Spanish New World colonies

Canadian Confederation

7th Cavalry Regiment

Princeton University