Eratosthenes actually had it easy, he already knew of a nearby city (Syene) where the sun was directly overhead at midday on one day of the year - the summer solstice ...

And Eratosthenes probably already knew that. The idea of a spherical Earth was floated around by Pythagoras around 500 BC and validated by Aristotle a couple centuries later.

The Earth observation satellite data acquisition station antenna recently arrived at Limassol, the Eratosthenes Centre of Excellence said in a statement.The Earth observation antenna is an advanced ...

Eratosthenes measures the earth. It was around 250 BCE when Eratosthenes was a librarian in the famous library of Alexandria He discovered in his reading that there was a yearly festival in the town ...

Eratosthenes actually had it easy, he already knew of a nearby city (Syene) where the sun was directly overhead at midday on one day of the year - the summer solstice ...

Eratosthenes hired a man to pace the distance between the two cities and learned they were 5,000 stadia apart, which is about 800 kilometres.

Eratosthenes knew that the distance between Syene and Alexandria was 7.2 degrees along the surface of the earth. So how many of those distances would he need to stretch around the entire 360 ...

I ended up with just enough time over the weekend to pull together a quick project. I implemented the Sieve-of-Eratosthenes on an ARM chip. If you haven’t heard of the Sieve of Eratosthenes then ...

But Helfgott, 38, went even farther back in time and conceived an improved version of the sieve of Eratosthenes, a popular method for finding prime numbers that was formulated circa 240 B.C ...

The Sieve of Eratosthenes. When the multiples sublime, The numbers that remain are Prime. Report comment. Reply. cheeseslices says: October 10, 2013 at 9:02 am You sir have just won at life.