Tag » Eratosthenes

Measuring the Earth this (Southern) Christmas

In around 240 BC, Eratosthenes calculated the circumference of the Earth. The diagram above (from NOAA) shows how he did it. This Christmas, people in the Southern Hemisphere can repeat his work! 312 kata lagi


133. The Constellation Myths of Eratosthenes (c. 220 BC) and Hyginus (c.24 BC)

Plot:   ‘Eratosthenes’ and Hyginus’ descriptions of the astral myths, or catasterismi, used to describe how figures or items from mythological stories became enshrined in the Heavens, and are often ‘tacked on’ to the original myths. 591 kata lagi

Ancient Greek Literature

Flat Earth

The misconception

People in the middle ages generally believed that the earth was flat and were persecuted by the church if they claimed it was a globe… 869 kata lagi


The Flat Earthers

In today’s Albany Times Union (March 10, 2017) , my friend Rex Smith writes about the confidence we should place in the scientific pronouncements of athletes or politicians. 614 kata lagi


Science in the Bible - Round Earth

(3 Minute Read)

What did Christopher Columbus, Pythagoras, and Aristotle have in common with the Hebrew prophet Isaiah?

They all knew earth is a sphere… 946 kata lagi


Sieve of Eratosthenes (without iteration) in MATLAB

For my CS class there was an extra credit problem in this week’s problem set where we had to write a sieve of Eratosthenes to find prime numbers up to an input integer. 525 kata lagi

People you meet on the Road V: The Pelican King

Over the winter of 2015, after having spent a wonderful and eventful Summer in Turkey, I decided to return to a small town called “Fethiye” for Christmas Holidays. 1.881 kata lagi