Template:Selected anniversaries/November 21: Difference between revisions

From Gnomon Chronicles
Jump to navigation Jump to search
No edit summary
No edit summary
Line 17: Line 17:


||1877 – Thomas Edison announces his invention of the phonograph, a machine that can record and play sound.
||1877 – Thomas Edison announces his invention of the phonograph, a machine that can record and play sound.
||Josef Mattauch (b. 21 November 1895) was a German physicist known for his work in the investigation of the isotopic abundances by mass spectrometry. He developed the Mattauch isobar rule in 1934. Pic.


File:Clock Head 2.jpg|link=Clock Head 2|1904: Mechanical engineer [[Clock Head 2]] warns theoretical physicist [[Albert Einstein (nonfiction)|Albert Einstein]] that the mass–energy equivalence formula, E = mc², will have "earth-shaking consequences."
File:Clock Head 2.jpg|link=Clock Head 2|1904: Mechanical engineer [[Clock Head 2]] warns theoretical physicist [[Albert Einstein (nonfiction)|Albert Einstein]] that the mass–energy equivalence formula, E = mc², will have "earth-shaking consequences."

Revision as of 09:37, 1 April 2018