Challenge: prove the Earth is round

[OohPooPahDoo]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

 

[syrenn]

Muslim are you?

 

[Rat in the Hat]

Eratosthenes of Cyrene (Ancient Greek: Ἐρατοσθένης, IPA: [eratostʰénɛːs]; English /ɛrəˈtɒsθəniːz/; c. 276 BC[1] – c. 195 BC[2]) was a Greek mathematician, geographer, poet, athlete, astronomer, and music theorist.

He was the first person to use the word "geography" and invented the discipline of geography as we understand it.[3] He invented a system of latitude and longitude.

He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period (with remarkable accuracy). He was the first to calculate the tilt of the Earth's axis (also with remarkable accuracy)

Eratosthenes calculated the circumference of the Earth without leaving Egypt. Eratosthenes knew that on the summer solstice at local noon in the Ancient Egyptian city of Swenet (known in Greek as Syene, and in the modern day as Aswan) on the Tropic of Cancer, the sun would appear at the zenith, directly overhead (he had been told that the shadow of someone looking down a deep well would block the reflection of the Sun at noon). He also knew, from measurement, that in his hometown of Alexandria, the angle of elevation of the sun was 1/50th of a circle (7°12') south of the zenith on the solstice noon. Assuming that the Earth was spherical (360°), and that Alexandria was due north of Syene, he concluded that the meridian arc distance from Alexandria to Syene must therefore be 1/50 = 7°12'/360°, and was therefore 1/50 of the total circumference of the Earth. His knowledge of the size of Egypt after many generations of surveying trips for the Pharaonic bookkeepers gave a distance between the cities of 5000 stadia (about 500 geographical miles or 800 km). This distance was corroborated by inquiring about the time that it takes to travel from Syene to Alexandria by camel. He rounded the result to a final value of 700 stadia per degree, which implies a circumference of 252,000 stadia. The exact size of the stadion he used is frequently argued. The common Attic stadion was about 185 m,[9] which would imply a circumference of 46,620 km, i.e. 16.3% too large. However, if we assume that Eratosthenes used the "Egyptian stadion"[10] of about 157.5 m, his measurement turns out to be 39,690 km, an error of less than 2%.[11]

Eratosthenes - Wikipedia, the free encyclopedia

 

[syrenn]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

Lunar eclipse.

The earth makes the shadow on the moon.... the shadow is round.

 

[MeBelle]

Uhmmm, haven't heard any news of people falling off the edge...
of the earth that is.

 

[Rat in the Hat]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

[ame=http://www.youtube.com/watch?v=angi1vwUkQc]Classic Movie Line #51 - YouTube[/ame]

 

[Katzndogz]

From the beginning of men taking to the sea in ships, mariners have known the earth is round because as a ship disappears from the horizon, it drops hull first, then sails as it goes around the curve.

Liberals who lived in the cities never believed them.

 

[bayoubill]

Uhmmm, haven't heard any news of people falling off the edge...
of the earth that is.

I fell off.. but then I came back...

 

[syrenn]

Uhmmm, haven't heard any news of people falling off the edge...
of the earth that is.

I fell off.. but then I came back...

Were there dragons?

 

[bayoubill]

From the beginning of men taking to the sea in ships, mariners have known the earth is round because as a ship disappears from the horizon, it drops hull first, then sails as it goes around the curve.

Liberals who lived in the cities never believed them.

From the beginning of men inveighing to govern over their fellow man, folks have known that some people talk out of their wazzoos...

bj (i.e., "before Jesse"), it largely had nothing at all to do with political persuasion...

 

[Rat in the Hat]

Oh, oh. According to this video (at the 4:50 mark) OohpooDooSpideyTuba might just be right.

[ame=http://www.youtube.com/watch?v=iakR7sB0skw]The Crimson Permanent Assurance part 2 - YouTube[/ame]

 

[syrenn]

I guess i stumped him on a retort about the earths shadow being round on the moon.....

 

[rdean]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

Drop some bread crumbs. Walk in one direction for 25,000 miles. Find bread crumbs.

 

[MeBelle]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

Drop some bread crumbs. Walk in one direction for 25,000 miles. Find bread crumbs.

Geeze rdean, you're actually putting out some humor in your posts today!

 

[Rat in the Hat]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

Drop some bread crumbs. Walk in one direction for 25,000 miles. Find bread crumbs.

I guess you liberals don't do science well. If he followed your advise, he would end up 98.45 miles away from the bread crumbs.

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).

What is the circumference of the earth?

 

[MeBelle]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

Drop some bread crumbs. Walk in one direction for 25,000 miles. Find bread crumbs.

I guess you liberals don't do science well. If he followed your advise, he would end up 98.45 miles away from the bread crumbs.

The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).

What is the circumference of the earth?

Awww, give him a break! He was rounding up!

 

[Old Rocks]

From the beginning of men taking to the sea in ships, mariners have known the earth is round because as a ship disappears from the horizon, it drops hull first, then sails as it goes around the curve.

Liberals who lived in the cities never believed them.

LOL. The Church Priesthood was liberal? Who'ada thunk it

 

[Quantum Windbag]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

You have seriously lost it. What explanation do you have for the difference between the stars in the northern Hemisphere and those in the Southern and the fact that they rotate in opposite directions?

Keep in mind that I have actually seen this.

[ame=http://www.youtube.com/watch?v=9y09Jz9eFtw]Circumpolar Stars-Northern Autumn Sky - YouTube[/ame]

[ame=http://www.youtube.com/watch?v=aJUd6HC7rbI]Circumpolar Stars-Southern Winter Sky - YouTube[/ame]

Or the Lunar eclipse and the Earth's shadow?

By the way, the Earth is not actually spherical, but it is closer to being spherical than it is flat.

 

[Quantum Windbag]

Asimov - The Relativity of Wrong

 

[syrenn]

Challenge (to you):

Prove the Earth is an approximate sphere without using any evidence gathered since and including the 20th century (so a picture of the Earth doesn't cut it)

Challenge (to me):

I will come up with an alternate explanation that does not involved a spherical earth for every piece of evidence presented.

You have seriously lost it. What explanation do you have for the difference between the stars in the northern Hemisphere and those in the Southern and the fact that they rotate in opposite directions?

Keep in mind that I have actually seen this.

[ame=http://www.youtube.com/watch?v=9y09Jz9eFtw]Circumpolar Stars-Northern Autumn Sky - YouTube[/ame]

[ame=http://www.youtube.com/watch?v=aJUd6HC7rbI]Circumpolar Stars-Southern Winter Sky - YouTube[/ame]

Or the Lunar eclipse and the Earth's shadow?

By the way, the Earth is not actually spherical, but it is closer to being spherical than it is flat.

You're late...i already bashed him with a lunar eclipse... and he has no answer.