Author Topic: Anniversary of Eratosthenes Measuring the Earth  (Read 3354 times)

Offline rcallicotte

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Anniversary of Eratosthenes Measuring the Earth
« on: June 19, 2007, 03:04:59 PM »
Today's History Channel calendar is very relevant to TG2 fans -

"Eratosthenes, a Greek academic, was the founding father of geography.  He invented the system of latitude and longitude and, on this day [June 19th] in 240 BC, offered up the first measure of the planet Earth.  Modern mathematicians approximate that his calculations reflected a size of 25,000 miles in circumference, only 98 miles more than the modern value of 24,902 miles."
So this is Disney World.  Can we live here?

Offline Will

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Re: Anniversary of Eratosthenes Measuring the Earth
« Reply #1 on: June 19, 2007, 04:15:56 PM »
yea I know, pretty crazy how smart some people are. (I have it on my calender)
The world is round... so you have to use spherical projection.

Offline rcallicotte

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Re: Anniversary of Eratosthenes Measuring the Earth
« Reply #2 on: June 19, 2007, 04:34:09 PM »
I like your footnote.  LOL
So this is Disney World.  Can we live here?

Harvey Birdman

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Re: Anniversary of Eratosthenes Measuring the Earth
« Reply #3 on: June 19, 2007, 05:55:32 PM »
Yeah, 2300 years ago a Greek mathematician calculated the diameter of the earth with less than .4% error.

About 5 (10?) years ago, NASA slammed a probe into Mars, accidentally destroying it because they hadn't (couldn't?) converted distance from metric to English units.

Still think we're getting smarter?

 ;D

Sethren

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Re: Anniversary of Eratosthenes Measuring the Earth
« Reply #4 on: June 19, 2007, 06:12:50 PM »
Just watch the movie "Idiocracy"    ;D


Offline Will

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Re: Anniversary of Eratosthenes Measuring the Earth
« Reply #5 on: June 19, 2007, 06:30:27 PM »
Note the word some. Though I wonder if their heads were bigger back then. (Idiocracy plug)

Regards

Will
The world is round... so you have to use spherical projection.