I believe there are 15,747,724,136,275, 002,577,605,653,961, 181,555,468,044,717, 914,527,116,709,366, 231,425,076,185,631, 031,296 protons in the universe and the same number of electrons.
The Philosophy of Physical Science. Cambridge, 1939.
Loci: Loci: Convergence
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Important events from the history of math that happened on this day:
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March 15th
| 1570 | Birthdate of the astronomer Andrea Argoli. From 1622 to 1627 he held a chair of mathematics in Rome, but lost it because of his enthusiasm for astrology.
More information about: Andrea Argoli |
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| 1868 | Grace Chisholm Young born near London, England. After completing her doctorate in 1895 with Felix Klein, she embarked on a long career of joint mathematical research with her husband William Young, almost all of which was published in his name only.
More information about: Grace Chisholm Young |
| 1897 | James Joseph Sylvester died in London, England. Beginning in 1877, he initiated graduate research in mathematics in the United States at Johns Hopkins University.
More information about: James Joseph Sylvester |
| 1955 | John von Neumann sworn in as one of the first Atomic Energy Commissioners. In August he learned that he had bone cancer.
More information about: John von Neumann |
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