The physicist Leon Foucault died at the age of 48. Here is all you want to know, and more!
Biography - A Short Wiki
French physicist who demonstrated the Earth’s rotation and measured the speed of light. For his breakthrough discoveries he was elected a member of the Royal Society of London, even though he was French.
His father was a publisher in Paris, France.
The phenomenon develops calmly, but it is invisible, unstoppable. One feels, one sees it born and grow steadily; and it is not in one’s power to either hasten or slow it down.
Any person, brought into the presence of this fact, stops for a few moments and remains pensive and silent; and then generally leaves, carrying with him forever a sharper, keener sense of our incessant motion through space.