Questions tagged [17th-century]

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Did a boat full of Louis XIV's Jesuits and some Siamese dignitaries plan on seeing a solar eclipse on May 17, 1687

The interesting Cosmic Elk article Eclipses in Siam (now Thailand) History and Legends says: While the Siamese ambassadors and their entourage were visiting ship yards and armouries and making ...
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Is it true that Johannes Kepler thought that the earth was hollow?

I was researching a little about the hollow earth theory, I know that many Scientist's back up this theory, namely Euler and Edmond Halley. I would like to know what was the theory that Johannes ...
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Was Kepler aware of the following golden relationship between the planets?

Was Kepler aware that Venus and Mars have a golden section relationship other than that he attributed to them in his 5 perfect solids model of the Solar System? The dodecahedron and the icosahedron, ...
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Where was statistics taught in the 17th and 18th centuries?

Here is a fragment from Anders Hald's A History of Probability and Statistics and Their Applications before 1750: The original meaning of statistics is thus a collection of facts of interest to a ...
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How did Kepler know that orbits are elliptical?

Suppose I was living in his time. How would Kepler explain that the orbits are elliptical? Since none of his 3 laws explain why orbits are elliptical, I assume he must have had other reasons to ...
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How was the term speed treated in the 16th and 17th centuries?

What did people in the 16th and 17th centuries mean by the term speed? Did they have $$\text{speed} = \frac{ \text{distance} }{ \text{time} }$$ back then? Or did they have some other notion of speed ...
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