Why the Earth is round.

  • 7 Replies
  • 4227 Views
Why the Earth is round.
« on: January 07, 2006, 10:21:30 AM »
If you believe the Earth is flat, how do you explain how people circumnavigate the globe?  Why is it possible to get into an airplane and fly completely around this flat Earth?  And why, when standing on the beach looking out at the ocean, does the water at the edge of your field of vision appear curved?  And when a boat is approaching, why do you see the sails first and only gradually see the rest of the boat as it gets closer?  Answer: Because the Earth is a sphere.
quot;In the beginning the Universe was created.  This has made a lot of people very angry and has been widely regarded as a bad move."

--Douglas Adams

?

Forty_Seven

Re: Why the Earth is round.
« Reply #1 on: January 12, 2006, 02:31:29 PM »
Quote from: "Maureen"
If you believe the Earth is flat, how do you explain how people circumnavigate the globe?  Why is it possible to get into an airplane and fly completely around this flat Earth?  And why, when standing on the beach looking out at the ocean, does the water at the edge of your field of vision appear curved?  And when a boat is approaching, why do you see the sails first and only gradually see the rest of the boat as it gets closer?  Answer: Because the Earth is a sphere.


wrong, eath is techincly a "oblate Spheriod"

Why the Earth is round.
« Reply #2 on: January 12, 2006, 04:54:49 PM »
dude, its a sphere with bumps. sphere is a good word
efore making fun of someone, walk a mile in their shoes. Then your a mile away and you have their shoes.

?

Erasmus

  • The Elder Ones
  • 4242
Why the Earth is round.
« Reply #3 on: January 15, 2006, 12:18:34 AM »
While I don't know the flat-Earth answer to the sails question (which I always considered a particularly damning bit, especially when you consider that this happens regardless of where in the ocean you are or where the other ship is coming from), I can assure you that on a flat Earth, the horizon would still appear round.  In fact, on a round Earth as well as a sufficiently large flat Earth, in reality, the horizon appears to be a straight line.  This is because you are only looking at a small part of it: the rest of it wraps around behind you, in a circle.  The reason the horizon exists at all is a perspective effect, a somewhat lengthy issue in geometry that more or less says, in a perspective projection (e.g. what your eyes do), parallel lines appear to converge, and the locus of the intersections of all parallel lines is the horizon.

As far as the circumnavigation issue, I suppose a diehard flat-Earther would assert that such claims are lies or lunacy.

-Erasmus
Why did the chicken cross the Möbius strip?

Why the Earth is round.
« Reply #4 on: January 15, 2006, 11:13:13 AM »
Quote
how do you explain how people circumnavigate the globe?
When you g oaround the Earth, you don't actually do it the way you assume. You're atually just going in a circle around the North pole at the center.
Quote
Why is it possible to get into an airplane and fly completely around this flat Earth?
See previous answer
Quote
And why, when standing on the beach looking out at the ocean, does the water at the edge of your field of vision appear curved?
It never has to me, and I've been to quite a few beaches in my time. My explanation: a whole lot of people with stigmatisms.
Quote
And when a boat is approaching, why do you see the sails first and only gradually see the rest of the boat as it gets closer?
They're all secretly submarines, they jsut don't want to admit it. Even your uncle's sailboat is a submarine, he just hasn't found the secret button that is mandatory in the production of boats.

?

Erasmus

  • The Elder Ones
  • 4242
Why the Earth is round.
« Reply #5 on: January 15, 2006, 01:49:59 PM »
Quote
They're all secretly submarines, they jsut don't want to admit it. Even your uncle's sailboat is a submarine, he just hasn't found the secret button that is mandatory in the production of boats.


I'd mention that I've been on a boat that I've later seen taken out of the water, and there was no submarine; and that I've been on a boat that I've swam underneath, and there was no submarine, but I'm afraid of being accused of being a government agent.

So I won't mention that.

Quote
When you g oaround the Earth, you don't actually do it the way you assume. You're atually just going in a circle around the North pole at the center.


What about circumpolar voyages?  Do you claim that such expeditions (over the south pole) never occurred?  (You can say "yes" to this).

-Erasmus
Why did the chicken cross the Möbius strip?

Why the Earth is round.
« Reply #6 on: January 15, 2006, 03:11:52 PM »
First, I didn't say the submarine was under the boat, I said it IS the boat.

Second, circumpolar expeditions have not occured.

?

Erasmus

  • The Elder Ones
  • 4242
Why the Earth is round.
« Reply #7 on: January 15, 2006, 05:15:07 PM »
Quote
First, I didn't say the submarine was under the boat, I said it IS the boat.


Ah, okay.  So, were boats in classical Greece also submarines?  Was there actually difficulty in building working submarines in the 19th century, as reported?

In fact, is anything that floats a submarine?

For that matter, are all landmasses also submarines?  I've noticed, while on boats, that land masses tend to poke up over the horizon  top-first when approached, and recede bottom-first when departed, just as other boats do.

If this is the case, then why is it that when you go out on the ocean and over the horizon, the rest of us don't drown?

The problem is the asymmetry: two sailors on two boats each see the other boat go over the horizon hull-first, but neither has ever [claimed to have] gone underwater in the event.

-Erasmus
Why did the chicken cross the Möbius strip?