Top Network Posts
- 17When was Zero actually introduced in mathematics ?
- 12When and on what basis was it decided that an hour have 60 minutes and a minute have 60 seconds?
- 12What were theories for why and how we see things?
- 10Why should February have 28 days?
- 9What is the truth behind "The Turk" (the mechanical chess machine)?
- 7Who pitched in the theory of Hollow Earth?
- 7Is there an astronomical reason behind the order for the names of days of the week?
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