Questions tagged [antiquity]

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What does des mean in ancient Egyptian? [closed]

Looking at the pefsu problems of ancient Egyptian mathematical papyrii I am wondering what does the word des mean. It is usually used together with the word jug to form des-jug, but sometimes the ...
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88 views

On Ptolemy climes

Reading Dante's Comedy, I was interested in understand a little bit how medieval geography worked, so I decided to have a look at Edward Luther Stevenson's translation of Ptolemy's Geographia. I've ...
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90 views

Gravity before Aristotle

In this wiki article, the history of gravity starts with Aristotle. However, what were the ideas about Earth's gravity and motion of planets before Aristotle?
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535 views

How did Romans do multiplications?

The Romans did not have Indian numerals. Worse still, they did not have the decimal system. Yet, they produced amazing works of engineering and architecture. How was that possible? It's troublesome ...
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3k views

Did Aristotle note that ships disappear over the horizon hull-first?

I have run across several references to Aristotle's arguments for a spherical earth which claim that he noted that ships sink over horizon hull-first. For instance, Isaac Asimov writes in his essay ...
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2answers
1k views

How did Ptolemy calculate the distance to the Moon?

I've read somewhere that Hipparchus measured the distance to the Moon using the lunar and solar eclipse and obtained a value of around 67.3 Earth radii. It also says that soon after Ptolemy gave a ...
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4k views

Why did Aristotle make mistakes in his laws of motion?

I was studying Aristotle's laws of motion and comparing them to Newton's. He states that heavier bodies fall faster than lighter ones. I really can't understand how he could have committed such a ...