Pierre-Simon Laplace
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Pierre-Simon, Marquis de Laplace was a French polymath, a scholar whose work has been instrumental in the fields of physics, astronomy, mathematics, engineering, statistics, and philosophy. He summari
Pierre-Simon Laplace as chancellor of the Senate under the First French Empire
Portrait of Pierre-Simon Laplace by Johann Ernst Heinsius (1784)
The Calorimeter of Lavoisier and La Place, Encyclopaedia Londinensis, 1801
A. Lunar gravitational potential: this depicts the Moon directly over 30° N (or 30° S) viewed from above the Northern Hemisphere.
Leonhard Euler
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Leonhard Euler was a Swiss polymath who was active as a mathematician, physicist, astronomer, logician, geographer, music theorist and engineer. He founded the studies of graph theory and topology and
Pierre-Simon Laplace
…was the apparent instability whereby Jupiter's orbit appeared to be shrinking while that of Saturn was expanding. The problem had been tackled by Leonhard Euler in 1748, and Joseph Louis Lagrange in 1763, but without success. In 1776, Laplace published a memoir in which he first explored the possible influences…
1753 portrait
1957 Soviet Union stamp commemorating the 250th birthday of Euler. The text says: 250 years from the birth of the great mathematician, academician Leonhard Euler.
Euler's grave at the Alexander Nevsky Monastery
Euler portrait on the sixth series of the 10 Franc banknote