Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > General > Off-Topic Babbling
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 14-March-2007, 08:23 AM
parallaxicality's Avatar
parallaxicality parallaxicality is offline
Senior Member
 
Join Date: Nov 2004
Posts: 2,167
Default Flat earth

I've been reading up on the history of the flat Earth... is it a hypothesis? I'm not sure. Conception. Yes. That works. The flat Earth conception. Anyway, what struck me is that there really wasn't any idea of a flat Earth until the 19th century. Early myths and legends hinted at the idea of a flat Earth, but it was pretty well established by about 1000 BC that the Earth was a sphere, and no one seemed to be very bothered about it. Well there were a few quibbles in the Middle Ages about how there could be nothing standing on the Antipodes, since they would fall off, but hey, who says anything was standing there? But then all of a sudden Washington Irving shows up and says Columbus proved the Earth was round, and the next thing you know we have a Flat Earth Society.

I blame Washington Irving for this. OK. I like the guy. Rip van Winkle and The Legend of Sleepy Hollow were great chillers. But if he hadn't created this idea that the round Earth was some weird modern theory, like evolution or geocentrism, invented by godless scientists, then I really doubt there would be any flat Earthers today.

But there's more to it than that. Even among non-flat-Earthers (who, in defence of the human race, I'll grant are the majority), the idea that Columbus discovered that the world was round still persists. How is it possible that one bit of modern day legendmongering could create such a fundamental disconnection between the modern world and three thousand years of continuous history?
__________________
I think fish is nice, but then I think that rain is wet, so who am I to judge?

It's gotten to the point where careful investigation is needed just to tell parody from reality. I think that means reality is broken.- Noclevername.
Reply With Quote
  #2 (permalink)  
Old 14-March-2007, 12:22 PM
Delvo Delvo is offline
Senior Member
 
Join Date: Oct 2006
Posts: 2,182
Default

I keep seeing people say that people think that, but I've never seen a single example of someone who actually thinks it.
Reply With Quote
  #3 (permalink)  
Old 14-March-2007, 12:55 PM
JohnD JohnD is offline
Senior Member
 
Join Date: Oct 2002
Posts: 1,427
Default

1000BC?
See Eratosthenes: http://en.wikipedia.org/wiki/Eratosthenes
"Around 240 BC"
John
Reply With Quote
  #4 (permalink)  
Old 14-March-2007, 01:31 PM
parallaxicality's Avatar
parallaxicality parallaxicality is offline
Senior Member
 
Join Date: Nov 2004
Posts: 2,167
Default

Quote:
Originally Posted by JohnD View Post
1000BC?
See Eratosthenes: http://en.wikipedia.org/wiki/Eratosthenes
"Around 240 BC"
John
Eratosthenes already knew the Earth was a sphere; Plato and Aristotle had offered good enough proofs two hundred years before Eratoshtenes measured its circumference, and Pythagoras held a belief in the spherical Earth even earlier than that (though what proofs he had for his position, if any, are unknown).

Quote:
Originally Posted by Delvo View Post
I keep seeing people say that people think that, but I've never seen a single example of someone who actually thinks it.
I've met a few. My grandfather for one. He mentioned that Columbus's crew throught they were going to fall off the edge of the world, and when I explained the truth to him, he just ignored it, and then said the exact same thing a week later. My stepmother called me up once and asked me "who" discovered the world was round, and when I said that no one person can claim to have discovered it, since it has been known since antiquity, she refused to accept it.
__________________
I think fish is nice, but then I think that rain is wet, so who am I to judge?

It's gotten to the point where careful investigation is needed just to tell parody from reality. I think that means reality is broken.- Noclevername.
Reply With Quote
  #5 (permalink)  
Old 14-March-2007, 04:32 PM
farmerjumperdon farmerjumperdon is offline
Senior Member
 
Join Date: Feb 2005
Location: Wisconsin USA
Posts: 3,929
Default

Quote:
Originally Posted by parallaxicality View Post
How is it possible that one bit of modern day legendmongering could create such a fundamental disconnection between the modern world and three thousand years of continuous history?
Thinking about this, I'm surprised nobody has ever cited ancient depictions of heavenly bodies as basically round. Wouldn't that indicate that the earliest people to think about such things seriously knew that heavenly bodies were round. Now it could be that they thought so, but didn't see the Earth as one of those bodies.

In all the Planet X drivel, don't the woo-woos cite ancient depictions of an "extra" body as proof of X, and doesn't that arguement insinuate knowledge of us being part of the population of bodies, and why would those ancients (and I'm talking about the smart ancients, not the we-don't-need-no-stinking-degree ancients) think our n't those , but that even Now that home body significantly different shaped than the others?

And what shape would they have assigned? A 2-dimensional plane? A 3-dimensional box with roughly the same proportions as a deck of playing cards? And why would they think you would fall off one side but not another?

I am moving toward agreement that the Flat Earth is more a modern goofy idea than anything else. When I was little and heard of it, i thought it was just some people being silly and having fun.
__________________
Don of Borg - Cool, Calm, Collective.

"Within the next generation I believe that the world's leaders will discover that infant conditioning and narco-hypnosis are more efficient, as instruments of government, than clubs and prisons, and that the lust for power can be just as completely satisfied by suggesting people into loving their servitude as by flogging them and kicking them into obedience." -- Aldous Huxley
Reply With Quote
  #6 (permalink)  
Old 14-March-2007, 05:14 PM
sarongsong's Avatar
sarongsong sarongsong is offline
Senior Member
 
Join Date: Nov 2002
Posts: 6,320
Default

Quote:
Originally Posted by farmerjumperdon View Post
Thinking about this, I'm surprised nobody has ever cited ancient depictions of heavenly bodies as basically round...
Well, they could see the most obvious heavenly objects, the sun and moon, were round.
Reply With Quote
  #7 (permalink)  
Old 14-March-2007, 05:46 PM
Disinfo Agent Disinfo Agent is offline
Senior Member
 
Join Date: Apr 2004
Posts: 6,363
Default

Quote:
Originally Posted by farmerjumperdon View Post
And what shape would they have assigned? A 2-dimensional plane? A 3-dimensional box with roughly the same proportions as a deck of playing cards?
Yep.
__________________
"All your bias are belong to us." Ara Pacis
"A witty saying proves nothing." Voltaire
Reply With Quote
  #8 (permalink)  
Old 14-March-2007, 05:55 PM
Doodler's Avatar
Doodler Doodler is offline
Senior Member
 
Join Date: Sep 2002
Location: Maryland
Posts: 9,407
Send a message via AIM to Doodler Send a message via MSN to Doodler
Default

Quote:
Originally Posted by sarongsong View Post
Well, they could see the most obvious heavenly objects, the sun and moon, were round.
Actually, those would be the ONLY heavenly objects they could see as round. Everything else was a point of light.
__________________
I'm not completely heartless, the doctor who removed it told me he'd never be able to get it all.
Reply With Quote
  #9 (permalink)  
Old 19-April-2007, 04:23 PM
Noclevername's Avatar
Noclevername Noclevername is offline
Senior Member
 
Join Date: Apr 2007
Posts: 10,714
Default

Quote:
Originally Posted by parallaxicality View Post
...there really wasn't any idea of a flat Earth until the 19th century. Early myths and legends hinted at the idea of a flat Earth, but it was pretty well established by about 1000 BC that the Earth was a sphere, and no one seemed to be very bothered about it. Well there were a few quibbles in the Middle Ages about how there could be nothing standing on the Antipodes, since they would fall off, but hey, who says anything was standing there? But then all of a sudden Washington Irving shows up and says Columbus proved the Earth was round, and the next thing you know we have a Flat Earth Society.

...

Even among non-flat-Earthers (who, in defence of the human race, I'll grant are the majority), the idea that Columbus discovered that the world was round still persists. How is it possible that one bit of modern day legendmongering could create such a fundamental disconnection between the modern world and three thousand years of continuous history?
There is a common assumption among modern people (even historians who should know better) that everyone who lived before the industrial revolution were primitive, superstitious savages. And of course, our modern system of miseducation does little or nothing to dispel such myths. In some cases it even spreads and reinforces them. Rumors and myths and old wives' tales often have more power to pursuade than plain, dry facts, particularly in historical subjects. Columbus was just flat-out wrong, until the day he died he thought he'd reached Asia (My Italian relatives would kill me if they heard me saying this). He thought the Earth was smaller than it is (based on one of the two prevailing round-Earth theories of the time) and that he'd sailed most of the way around it. How hitting an uncharted continent equals discovering the roundness of the planet in most people's minds puzzles me, but then most people's minds puzzle me anyway.
__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Last edited by Noclevername; 19-April-2007 at 04:24 PM. Reason: .
Reply With Quote
  #10 (permalink)  
Old 19-April-2007, 07:24 PM
Amber Robot's Avatar
Amber Robot Amber Robot is offline
Senior Member
 
Join Date: Dec 2006
Posts: 641
Default



So, um... where does the sun go at night?

Last edited by Jim; 19-April-2007 at 08:30 PM. Reason: oops, my mistake... no changes
Reply With Quote
  #11 (permalink)  
Old 19-April-2007, 07:35 PM
mike alexander's Avatar
mike alexander mike alexander is offline
Senior Member
 
Join Date: Jul 2003
Location: McMinnville, Oregon
Posts: 6,660
Default

I would be curiious if any sailors out there have anything to add. It seems to me that sailing over long distances would drive home the sphericity of the earth. For that matter 'hull down' is a very old term, and offers a direct demonstration of the sea's (earth's) shape. I know that in the days of tall sail the rough distance to another ship far off was judged by how much of it stuck up over the horizon.
__________________
The Devil offered me power. I told him I preferred aperture.
Reply With Quote
  #12 (permalink)  
Old 19-April-2007, 08:00 PM
LurchGS's Avatar
LurchGS LurchGS is offline
Senior Member
 
Join Date: Aug 2003
Location: I can see your house from here
Posts: 3,057
Default

well, as an ex-sailor.. nope, nothing to add.

However, IIRC the Egyptians - in the pyramid dynasties - knew not only that the earth was round, but also had a pretty good estimate of the diameter.

Middle ages Persia also knew the diameter of the earth pretty accurately.

I'm not sure about the ancient Chinese, but it wouldn't surprise me.

Quote:
How hitting an uncharted continent equals discovering the roundness of the planet in most people's minds puzzles me, but then most people's minds puzzle me anyway.
He's not credited with *discovering* the earth is round, but *proving* it. Other than that, yeah, it's boggled my mind for a long time. All he really proved is that the earth is not 16 thousand miles around (which just about every other civilization in the world knew already)
Reply With Quote
  #13 (permalink)  
Old 19-April-2007, 08:12 PM
NEOWatcher's Avatar
NEOWatcher NEOWatcher is offline
Senior Member
 
Join Date: May 2005
Location: the E(e)rie coast
Posts: 7,306
Default

Quote:
Originally Posted by LurchGS View Post
However, IIRC the Egyptians - in the pyramid dynasties - knew not only that the earth was round, but also had a pretty good estimate of the diameter.
Well, I did a little searching from this post, because I wasn't sure why Eratosthenes originally thought the Earth was round, and the sun just wasn't closer to the Earth causing a differen angle of sunlight.
Found out, they always thought the sphere was a "Godly" shape, and Aristarchus, ptolemy and hipparchus all had ways of determining the size and distance of the sun and moon.
Pretty amazing for over 2000 years ago.


Quote:
Originally Posted by LurchGS View Post
He's not credited with *discovering* the earth is round, but *proving* it. All he really proved is that the earth is not 16 thousand miles around
I don't even think he set out to prove the earth was round, only to determine a better route because the Earth was known to be round.
__________________
Numbers are not case sensitive. (me)
Reply With Quote
  #14 (permalink)  
Old 19-April-2007, 08:18 PM
Jim's Avatar
Jim Jim is offline
Moderator
 
Join Date: Oct 2001
Location: Clear Lake City, TX
Posts: 4,158
Default

Quote:
Originally Posted by LurchGS View Post
However, IIRC the Egyptians - in the pyramid dynasties - knew not only that the earth was round, but also had a pretty good estimate of the diameter.
Well, Egyptian mythology had the sun crossing the sky from east to west, and then travelling through a tunnel under the earth to get back to the east again. That doesn't sound like a round earth to me.
__________________
Never attribute to malice what can be adequately explained by ignorance or stupidity.
Isaac Asimov
Reply With Quote
  #15 (permalink)  
Old 19-April-2007, 08:24 PM
LurchGS's Avatar
LurchGS LurchGS is offline
Senior Member
 
Join Date: Aug 2003
Location: I can see your house from here
Posts: 3,057
Default

Quote:
Originally Posted by NEOWatcher View Post

I don't even think he set out to prove the earth was round, only to determine a better route because the Earth was known to be round.
I agree that this was his intent - it's us modern folk who have assigned the "prove the earth is round" bit to his escapade. I stated it badly, since he didn't prove anything other than there was a great big hunk of rock in the way of anybody travelling west to get to India.

Jim - I'm trying to find where I read that bit about the Egyptians (though I should point out that, as stated, the two concepts are not mutually exclusive).
Reply With Quote
  #16 (permalink)  
Old 19-April-2007, 08:39 PM
Jim's Avatar
Jim Jim is offline
Moderator
 
Join Date: Oct 2001
Location: Clear Lake City, TX
Posts: 4,158
Default

Okay. In the meantime...

The Egyptians thought the earth a square, (with four corners) with mountains at the edge supporting the vault of the sky.
http://www.lhup.edu/~dsimanek/flat/flateart.htm


As neighbors, the ancient Hebrews had the Egyptians to the southwest and the Babylonians to the northeast. Both civilizations had flat-earth cosmologies.
http://www.positiveatheism.org/writ/flatearth.htm

Ancient Egyptian: The sky was a tent canopy stretched between mountains at the four corners of the Earth.
http://www.astronomy.ohio-state.edu/...measearth.html

Of course, the Egyptians may have revised their scientific thinking, and still retained their religous concepts. That's not without precedent.
__________________
Never attribute to malice what can be adequately explained by ignorance or stupidity.
Isaac Asimov
Reply With Quote
  #17 (permalink)  
Old 19-April-2007, 08:51 PM
LurchGS's Avatar
LurchGS LurchGS is offline
Senior Member
 
Join Date: Aug 2003
Location: I can see your house from here
Posts: 3,057
Default

Quote:
Originally Posted by Jim View Post
Of course, the Egyptians may have revised their scientific thinking, and still retained their religous concepts. That's not without precedent.
Good links... and I was just considering this last bit myself.
Reply With Quote
  #18 (permalink)  
Old 19-April-2007, 09:04 PM
torque of the town's Avatar
torque of the town torque of the town is offline
Senior Member
 
Join Date: Feb 2007
Location: Merseyside,UK
Posts: 1,134
Default

Quote:
Originally Posted by Amber Robot View Post


So, um... where does the sun go at night?


I'm working on a theory......it's not easy
__________________
But you're sure the astronauts are lying; you just don't seem to know what they're lying about. jayutah
Reply With Quote
  #19 (permalink)  
Old 19-April-2007, 09:06 PM
LurchGS's Avatar
LurchGS LurchGS is offline
Senior Member
 
Join Date: Aug 2003
Location: I can see your house from here
Posts: 3,057
Default

obviously it goes out
Reply With Quote
<