Questions tagged [17th-century]
The 17th-century tag has no usage guidance.
6
questions with no upvoted or accepted answers
3
votes
0
answers
87
views
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 ...
- 1,952
2
votes
0
answers
239
views
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 ...
- 121
2
votes
0
answers
899
views
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, ...
- 146
1
vote
0
answers
116
views
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 ...
- 189
1
vote
0
answers
161
views
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 ...
- 11
0
votes
0
answers
77
views
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 ...
- 151