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19 votes
Accepted

Who was Christophorus Uveida?

[I would like to thank @CarlosMartin for the helpful link to Christianson's book which I am referencing below]. The last name of the printer is written with a true double-U, so is actually Weida in ...
njuffa's user avatar
  • 2,526
6 votes

What are the parameters of these 16th-17th century artillery weapons?

I think the key problem here has been identified in the question "weapons were not really standardised". This was a period when artillery was almost entirely bespoke. You went to a cannon ...
Steve Bird's user avatar
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5 votes

What are the parameters of these 16th-17th century artillery weapons?

Roll-up community-wiki answer. Partial answers with details on one or more individual pieces are encouraged, but novel information in them should also be rolled into this answer (as consistent with ...
4 votes

Why does the amount of days in an year on average of the Gregorian calendar only have 4 decimal places (365.2425)?

This question was answered in a 1986 paper by the late professor Noel Swerdlow [1]. Briefly, the 1577 proposal for calendar reform was based on a lost book by then-already-dead astronomer Aloysius ...
Johannes's user avatar
  • 149

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