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A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...

 
Anonymous Coward
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08/06/2019 12:03 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
If the earth was flat all of the water would have rushed to one side and we would have flipped over like a pancake being cooked.
BTBIC
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08/06/2019 12:14 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Excellent well thought out response.

Still, the proof bit...........nope, still nothing.
 Quoting: BTBIC 6660082


Tell me what you would accept as proof?
 Quoting: Johnny Be Good


Practical demonstration of the claims made.
Simple.
No pseudo science.
 Quoting: BTBIC 6660082


OK - one mile of fishing line tied between two points at water level on a calm lake, pull tight and the middle will lie at 8" below water level.

Alternatively a gyro with it's spin axis aligned with the earth will show no 'apparent' precession - all others will.

Pendulum in N. hemishere will 'precess' oppositely from one in south.


There you go - document these experiments and make yourself famous if they don't work as I say.
 Quoting: Johnny Be Good


Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
AstroshillModerator
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08/06/2019 12:17 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Tell me what you would accept as proof?
 Quoting: Johnny Be Good


Practical demonstration of the claims made.
Simple.
No pseudo science.
 Quoting: BTBIC 6660082


OK - one mile of fishing line tied between two points at water level on a calm lake, pull tight and the middle will lie at 8" below water level.

Alternatively a gyro with it's spin axis aligned with the earth will show no 'apparent' precession - all others will.

Pendulum in N. hemishere will 'precess' oppositely from one in south.


There you go - document these experiments and make yourself famous if they don't work as I say.
 Quoting: Johnny Be Good


Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
 Quoting: BTBIC 77892984

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
astrobanner2
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08/06/2019 12:19 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
If water curves 8" over a mile it could be demonstrated to curve in a fish aquarium. So instead of trying to do a ridiculous 1 mile fishing line across a lake - just show us the miniscule curve in the aquarium

Yeah good luck trying to differentiate a millimetre (less) of curvature from surface tension and menisca effects.

Besides you need to have a bit of showmanship including preferably a couple of bikini babes.
 Quoting: Johnny Be Good


All you had to say is it’s not there. Thanks
VerT

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08/06/2019 12:30 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Take a walk to Louisiana




Last Edited by VerT on 08/06/2019 03:13 PM
BTBIC
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08/06/2019 12:30 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Practical demonstration of the claims made.
Simple.
No pseudo science.
 Quoting: BTBIC 6660082


OK - one mile of fishing line tied between two points at water level on a calm lake, pull tight and the middle will lie at 8" below water level.

Alternatively a gyro with it's spin axis aligned with the earth will show no 'apparent' precession - all others will.

Pendulum in N. hemishere will 'precess' oppositely from one in south.


There you go - document these experiments and make yourself famous if they don't work as I say.
 Quoting: Johnny Be Good


Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
 Quoting: BTBIC 77892984

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
 Quoting: Astroshill


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
syncro

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08/06/2019 12:31 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Please, you can't use any math, science/instrumentation with btbic. Stick with the standards.
Anonymous Coward
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08/06/2019 12:31 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
He eventually came around
 Quoting: Anonymous Coward 70279333


The edge is in Antarctica, not exactly easy to get to.......
Anonymous Coward
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08/06/2019 12:33 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Lots of friends of mine believe the earth to be a globe.
I challenged them to prove it....THEY CAN'T
 Quoting: BTBIC 6660082


hesright

Instead of insulting btbic, please show us the thousands of videos of our earth spinning? What? You don t have any video? And we send robots on mars?? 1rof1lmao
 Quoting: ThePassenger



hesright
Anonymous Coward
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08/06/2019 12:36 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
the poles are the "edge". Earth is just a non-euclidean, repeating surface, NOT a spheroid. So the "edge" gives the illusion of vanishing to a point, i.e. the "poles". DUH. Learn to math, primate!
AstroshillModerator
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08/06/2019 12:41 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


OK - one mile of fishing line tied between two points at water level on a calm lake, pull tight and the middle will lie at 8" below water level.

Alternatively a gyro with it's spin axis aligned with the earth will show no 'apparent' precession - all others will.

Pendulum in N. hemishere will 'precess' oppositely from one in south.


There you go - document these experiments and make yourself famous if they don't work as I say.
 Quoting: Johnny Be Good


Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
 Quoting: BTBIC 77892984

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
 Quoting: Astroshill


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
 Quoting: BTBIC 77892984


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
astrobanner2
BTBIC
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08/06/2019 12:41 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Please, you can't use any math, science/instrumentation with btbic. Stick with the standards.
 Quoting: syncro


Oh we can use all maths, science/instrumentation with BTBIC.....just rooted in reality. That's where the issue comes in doesn't it? Ideas do not provide a sound basis for forming a world view.
BTBIC
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08/06/2019 12:43 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
 Quoting: BTBIC 77892984

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
 Quoting: Astroshill


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
 Quoting: BTBIC 77892984


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
 Quoting: Astroshill


No. No need.....just explaining optical phenomenon is not practical demonstration, try again
AstroshillModerator
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08/06/2019 12:44 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Lots of friends of mine believe the earth to be a globe.
I challenged them to prove it....THEY CAN'T
 Quoting: BTBIC 6660082


hesright

Instead of insulting btbic, please show us the thousands of videos of our earth spinning? What? You don t have any video?
 Quoting: ThePassenger

[link to epic.gsfc.nasa.gov (secure)]
And we send robots on mars?? 1rof1lmao
 Quoting: ThePassenger

Yes, we do.

astrobanner2
AstroshillModerator
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08/06/2019 12:44 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
 Quoting: Astroshill


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
 Quoting: BTBIC 77892984


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
 Quoting: Astroshill


No. No need.....just explaining optical phenomenon is not practical demonstration, try again
 Quoting: BTBIC 77892984

You have not explained my observation. Try again. So any practical demonstration will be handwaved away as an "optical phenomenon." What a pathetic excuse, no wonder you hide in your shed and rage out. You're a dishonest coward.

Last Edited by Astroshill on 08/06/2019 12:46 PM
astrobanner2
BTBIC
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08/06/2019 12:52 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
 Quoting: BTBIC 77892984


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
 Quoting: Astroshill


No. No need.....just explaining optical phenomenon is not practical demonstration, try again
 Quoting: BTBIC 77892984

You have not explained my observation. Try again. So any practical demonstration will be handwaved away as an "optical phenomenon." What a pathetic excuse, no wonder you hide in your shed and rage out. You're a dishonest coward.
 Quoting: Astroshill


Nothing you offered is a practical demonstration of the claims made.

I am open to discuss this with you. It's not hiding away offering a platform for anyone to discuss anything, come in.....or hide
AstroshillModerator
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08/06/2019 12:54 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
 Quoting: Astroshill


No. No need.....just explaining optical phenomenon is not practical demonstration, try again
 Quoting: BTBIC 77892984

You have not explained my observation. Try again. So any practical demonstration will be handwaved away as an "optical phenomenon." What a pathetic excuse, no wonder you hide in your shed and rage out. You're a dishonest coward.
 Quoting: Astroshill


Nothing you offered is a practical demonstration of the claims made.
 Quoting: BTBIC 77892984

Wrong, Dell.

Keep raging out, I will keep ramming my demonstration of curvature down your throat.
astrobanner2
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08/06/2019 12:55 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
I am open to discuss this with you.
 Quoting: BTBIC 77892984


Well then, the next time SpaceX has a drone ship landing come over here and watch it come up over the horizon as they bring it back into port. I'll show you to your face that you're fucking wrong.
astrobanner2
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08/06/2019 01:01 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
I notice that no flat tards post when AC is banned, then as soon as AC can post again the flat tards return...

You're either shilling or you realise that you actually mentally impaired, due to stupidity. Therefore hide yourselves...

Derps gonna derp I guess.
-------------------------------------

Truth is like the sun. You can shut it out for a time, but it ain't goin away.

-------------------------------------

You are not entitled to your opinion. You are entitled to your informed opinion. No one is entitled to be ignorant.
Anonymous Coward
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08/06/2019 01:43 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
He eventually came around
 Quoting: Anonymous Coward 70279333


You cannot photograph the edge, because of the vanishing point.

cruise
BTBIC
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08/06/2019 02:46 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
I am open to discuss this with you.
 Quoting: BTBIC 77892984


Well then, the next time SpaceX has a drone ship landing come over here and watch it come up over the horizon as they bring it back into port. I'll show you to your face that you're fucking wrong.
 Quoting: Astroshill


So I need to come to America for a discussion?

Clear again that you do not understand how to practically demonstrate your claims.

Although I think you do understand, you simply can't.
AstroshillModerator
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08/06/2019 03:55 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
I am open to discuss this with you.
 Quoting: BTBIC 77892984


Well then, the next time SpaceX has a drone ship landing come over here and watch it come up over the horizon as they bring it back into port. I'll show you to your face that you're fucking wrong.
 Quoting: Astroshill


So I need to come to America for a discussion?

Clear again that you do not understand how to practically demonstrate your claims.
 Quoting: BTBIC 77892984


You need to come to America so that I can demonstrate it to you in person, since clearly you don't understand how images or video works.

Of course you won't, because you're a broke shed raging coward.
astrobanner2
BTBIC
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08/06/2019 04:01 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
I am open to discuss this with you.
 Quoting: BTBIC 77892984


Well then, the next time SpaceX has a drone ship landing come over here and watch it come up over the horizon as they bring it back into port. I'll show you to your face that you're fucking wrong.
 Quoting: Astroshill


So I need to come to America for a discussion?

Clear again that you do not understand how to practically demonstrate your claims.
 Quoting: BTBIC 77892984


You need to come to America so that I can demonstrate it to you in person, since clearly you don't understand how images or video works.

Of course you won't, because you're a broke shed raging coward.
 Quoting: Astroshill


Yet in amongst all the nonsense you type there is still nothing that proves the earth is a ball.
AstroshillModerator
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08/06/2019 04:02 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


Well then, the next time SpaceX has a drone ship landing come over here and watch it come up over the horizon as they bring it back into port. I'll show you to your face that you're fucking wrong.
 Quoting: Astroshill


So I need to come to America for a discussion?

Clear again that you do not understand how to practically demonstrate your claims.
 Quoting: BTBIC 77892984


You need to come to America so that I can demonstrate it to you in person, since clearly you don't understand how images or video works.

Of course you won't, because you're a broke shed raging coward.
 Quoting: Astroshill


Yet in amongst all the nonsense you type there is still nothing that proves the earth is a ball.
 Quoting: BTBIC 77892984

Watch the video.

astrobanner2
Hydra

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08/06/2019 06:06 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
Good one, I'm not here too wipe your arse for you.

Do you have any practical demonstrations of the claims made?
 Quoting: BTBIC 77892984

Done.

Bottom of the rocket obscured by the curvature of the water during drone ship landing.
 Quoting: Astroshill


Still unable to grasp the "practical demonstration" part or deliberately ignoring the requirements?
 Quoting: BTBIC 77892984


Observing a rocket land over the curvature is something I did in practice, it is a practical demonstration. Do I need to beat you over your head with my telescope to get it through your skull?
 Quoting: Astroshill

Don't waste your prized telescope, a cheap equatorial mount will do it, too.

.
If the Moon is off, if Earth wobbles or if there is a pole shift
how can things like this, predicted decades ago, happen?

aseindia
Annular Solar Eclipse - January 15, 2010 - Rameshwaram, India
BTBIC
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08/06/2019 06:17 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


So I need to come to America for a discussion?

Clear again that you do not understand how to practically demonstrate your claims.
 Quoting: BTBIC 77892984


You need to come to America so that I can demonstrate it to you in person, since clearly you don't understand how images or video works.

Of course you won't, because you're a broke shed raging coward.
 Quoting: Astroshill


Yet in amongst all the nonsense you type there is still nothing that proves the earth is a ball.
 Quoting: BTBIC 77892984

Watch the video.

 Quoting: Astroshill


It's STILL not practically demonstrating the claims......
Hydra

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08/06/2019 06:27 PM

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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
...


You need to come to America so that I can demonstrate it to you in person, since clearly you don't understand how images or video works.

Of course you won't, because you're a broke shed raging coward.
 Quoting: Astroshill


Yet in amongst all the nonsense you type there is still nothing that proves the earth is a ball.
 Quoting: BTBIC 77892984

Watch the video.

 Quoting: Astroshill

It's STILL not practically demonstrating the claims......
 Quoting: BTBIC 66938481



.
If the Moon is off, if Earth wobbles or if there is a pole shift
how can things like this, predicted decades ago, happen?

aseindia
Annular Solar Eclipse - January 15, 2010 - Rameshwaram, India
Anonymous Coward
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08/06/2019 07:00 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
"Go to the harbor

Credit: Jim Schubert/Shutterstock
When a ship sails off toward the horizon, it doesn't just get smaller and smaller until it's not visible anymore. Instead, the hull seems to sink below the horizon first, then the mast. When ships return from sea, the sequence is reversed: First the mast, then the hull, seem to rise over the horizon.

The ship-and-horizon observation is so self-evident that 1881's "Zetetic Astronomy," the first modern flat-Earth text, devotes a chapter to "debunking" it. The explanation relies on assuming that the sequential disappearance is simply an illusion brought on by perspective. This debunking does not make much sense, however, as there's nothing about perspective (which just says that things are smaller over longer distances) that should make the bottom of an object disappear before the top. If you'd like to prove to yourself that perspective isn't the reason for boats disappearing hull-first and returning mast-first, bring a telescope or binoculars on your trip to the harbor. Even with vision enhancement, the ship will still dip below the curve of the Earth.


Compare shadows

Credit: Zurijeta/Shutterstock
The first person to estimate the circumference of the Earth was a Greek mathematician named Eratosthenes, who was born in 276 B.C. He did so by comparing shadows case on the day of the summer solstice in what is today Aswan, Egypt, with the more northerly city of Alexandria. At noon, when the sun was directly overhead in Aswan, there were no shadows. In Alexandria, a stick set in the ground cast a shadow. Eratosthenes realized that if he knew the angle of the shadow and the distance between the cities, he could calculate the circumference of the globe.

On a flat Earth, there wouldn't have been any difference between the length of the shadows at all. The sun's position would be the same, relative to the ground. Only a globe-shaped planet explains why the sun's position should be different in two cities a few hundred miles apart

Go climb a tree

Credit: Dmitry Galaganov/Shutterstock
This is another one of those self-evident things: You can see farther if you go higher. If the Earth was flat, you'd be able to see the same distance no matter your elevation. Think about it: Your eye can detect a bright object, like the Andromeda galaxy, from 2.6 million light-years away. Seeing the lights of, say, Miami from New York City (a distance of a mere 1,094 miles or 1,760 kilometers) on a clear evening should be child's play.

But it's not. That's because the curvature of the Earth limits our sight to about 3.1 miles (5 kilometers) … unless you climb up a tall tree, building or mountain and get yourself a perspective from higher up"

[link to www.google.com (secure)]


"In the clip, a flat-Earther named Jeran from a group known as Globebusters set up a simple experiment to prove that the Earth is flat. He used two boards, both with a hole at a height of 5.18 meters (17 feet) above water level, a camera, and another person by the name of Henrique holding a torch at the same height and aligned with the holes.


If the Earth was flat, no matter how far Henrique was, the light would come through the holes. But on a spherical Earth, there’s the curvature to consider. Given Henrique’s distance from the holes, he would have to position the light above his head (7 meters/23 feet above the water level) for it to be seen."



[link to www.google.com (secure)]


"1. Ships and the horizon
The horizon is the line at which the Earth’s surface and the sky appear to meet. When ships sailing away disappear into the horizon, they do so bottom-first. The top vanishes later, which creates the illusion that the ship is sinking. Similarly, when ships appear from the horizon, the top appears first, and then the rest of the ship.

2. We cannot see very far away
Let’s say that you are standing on the West coast of North America on a clear day. While you are able to see the sun and moon in the sky, which are quite far away, you cannot see Japan if you look to the west. The reason you cannot see that far away on Earth is that light travels in a straight line and hence cannot follow Earth’s curve.

3. Visibility and elevated areas
Many sailors are aware of the fact that elevated areas of land are visible at greater distances than those less elevated. Moreover, if one is standing on an elevated area, they are able to see farther away into the distance compared to if they were standing at a lower altitude. The curvature of the Earth is responsible for these observations.

4. Other planets are spherical
Mercury, Venus, Mars, Jupiter and Saturn can all be seen with the naked eye. In 1781, William Hershel used his telescope to observe Uranus’ motion and discovered that it was a planet, not a star as was previously thought. Based on small perturbations in Uranus’ orbit, it was then predicted that a more distant planet also existed. In 1846, Neptune was discovered to be that planet (it was also previously thought to be a star). If the other planets in our solar system can be observed to be spherical, why should ours be any different?

5. Most things are spherical
Not only are planets spherical, but so are stars and moons. In fact, the forces of nature are such that objects tend to form into spheres, whether they are celestial bodies or mere soap bubbles. In the case of soap bubbles, surface tension, which wants to make the bubble smaller in all directions, causes the spherical shape. In the case of cosmic objects, it is gravity that tries to collapse matter in all directions since all the atoms are pulled toward a common center of gravity.
If a spherical object is rotating, the rotation flattens out the middle, making the sphere wider across the equator and narrower across the poles. This is because, in the case of rapid spinning, the centripetal force overcomes the gravitational attraction trying to create a spherical shape. Earth is an example of this, hence the oblate spheroid shape. Jupiter is the fastest spinning planet in our solar system and therefore is more flattened than Earth. The sun rotates slowly, but there are other stars that spin rapidly and also have flattened shapes. Rapid spinning is also the reason black hole accretion disks, solar systems, and galaxies exhibit flattened disk shapes.

6. Temperature variation from equator to poles
The Earth is tilted 23.5 degrees relative to the sun. The northern hemisphere is tilted toward the sun for 6 months, while the southern hemisphere is tilted away, and vice versa. Consequently, while equatorial areas receive direct sunlight all year round, polar areas spend half of the year pointed away from the sun. This difference in sunlight exposure results in higher temperatures closer to the equator.
The Earth’s tilt also explains the extreme length of day and night at polar locations. While the length of the day at the equator is almost exactly always 12 hours due to the equator always receiving direct sunlight, the length of day and night at the poles is influenced by the Earth’s position relative to the sun.
The Earth’s tilt is also the reason that there are four seasons, and that as we approach the equator, the intensity of the seasons decreases until they are completely nonexistent right at the equator."



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Anonymous Coward
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08/06/2019 07:04 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
The earth is very flat. I’ve never been to space but my family owns a private jet my grandparents had the windows redone in the early 2000s to be non fish eye windows, they are rectangular. You can see the flatness in every direction.
Anonymous Coward
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08/06/2019 07:10 PM
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Re: A friend of mine believes that the Earth is flat. I challenged him to prove it by walking off the edge...
"Go to the harbor

Credit: Jim Schubert/Shutterstock
When a ship sails off toward the horizon, it doesn't just get smaller and smaller until it's not visible anymore. Instead, the hull seems to sink below the horizon first, then the mast. When ships return from sea, the sequence is reversed: First the mast, then the hull, seem to rise over the horizon.

The ship-and-horizon observation is so self-evident that 1881's "Zetetic Astronomy," the first modern flat-Earth text, devotes a chapter to "debunking" it. The explanation relies on assuming that the sequential disappearance is simply an illusion brought on by perspective. This debunking does not make much sense, however, as there's nothing about perspective (which just says that things are smaller over longer distances) that should make the bottom of an object disappear before the top. If you'd like to prove to yourself that perspective isn't the reason for boats disappearing hull-first and returning mast-first, bring a telescope or binoculars on your trip to the harbor. Even with vision enhancement, the ship will still dip below the curve of the Earth.


Compare shadows

Credit: Zurijeta/Shutterstock
The first person to estimate the circumference of the Earth was a Greek mathematician named Eratosthenes, who was born in 276 B.C. He did so by comparing shadows case on the day of the summer solstice in what is today Aswan, Egypt, with the more northerly city of Alexandria. At noon, when the sun was directly overhead in Aswan, there were no shadows. In Alexandria, a stick set in the ground cast a shadow. Eratosthenes realized that if he knew the angle of the shadow and the distance between the cities, he could calculate the circumference of the globe.

On a flat Earth, there wouldn't have been any difference between the length of the shadows at all. The sun's position would be the same, relative to the ground. Only a globe-shaped planet explains why the sun's position should be different in two cities a few hundred miles apart

Go climb a tree

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This is another one of those self-evident things: You can see farther if you go higher. If the Earth was flat, you'd be able to see the same distance no matter your elevation. Think about it: Your eye can detect a bright object, like the Andromeda galaxy, from 2.6 million light-years away. Seeing the lights of, say, Miami from New York City (a distance of a mere 1,094 miles or 1,760 kilometers) on a clear evening should be child's play.

But it's not. That's because the curvature of the Earth limits our sight to about 3.1 miles (5 kilometers) … unless you climb up a tall tree, building or mountain and get yourself a perspective from higher up"

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"In the clip, a flat-Earther named Jeran from a group known as Globebusters set up a simple experiment to prove that the Earth is flat. He used two boards, both with a hole at a height of 5.18 meters (17 feet) above water level, a camera, and another person by the name of Henrique holding a torch at the same height and aligned with the holes.


If the Earth was flat, no matter how far Henrique was, the light would come through the holes. But on a spherical Earth, there’s the curvature to consider. Given Henrique’s distance from the holes, he would have to position the light above his head (7 meters/23 feet above the water level) for it to be seen."



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"1. Ships and the horizon
The horizon is the line at which the Earth’s surface and the sky appear to meet. When ships sailing away disappear into the horizon, they do so bottom-first. The top vanishes later, which creates the illusion that the ship is sinking. Similarly, when ships appear from the horizon, the top appears first, and then the rest of the ship.

2. We cannot see very far away
Let’s say that you are standing on the West coast of North America on a clear day. While you are able to see the sun and moon in the sky, which are quite far away, you cannot see Japan if you look to the west. The reason you cannot see that far away on Earth is that light travels in a straight line and hence cannot follow Earth’s curve.

3. Visibility and elevated areas
Many sailors are aware of the fact that elevated areas of land are visible at greater distances than those less elevated. Moreover, if one is standing on an elevated area, they are able to see farther away into the distance compared to if they were standing at a lower altitude. The curvature of the Earth is responsible for these observations.

4. Other planets are spherical
Mercury, Venus, Mars, Jupiter and Saturn can all be seen with the naked eye. In 1781, William Hershel used his telescope to observe Uranus’ motion and discovered that it was a planet, not a star as was previously thought. Based on small perturbations in Uranus’ orbit, it was then predicted that a more distant planet also existed. In 1846, Neptune was discovered to be that planet (it was also previously thought to be a star). If the other planets in our solar system can be observed to be spherical, why should ours be any different?

5. Most things are spherical
Not only are planets spherical, but so are stars and moons. In fact, the forces of nature are such that objects tend to form into spheres, whether they are celestial bodies or mere soap bubbles. In the case of soap bubbles, surface tension, which wants to make the bubble smaller in all directions, causes the spherical shape. In the case of cosmic objects, it is gravity that tries to collapse matter in all directions since all the atoms are pulled toward a common center of gravity.
If a spherical object is rotating, the rotation flattens out the middle, making the sphere wider across the equator and narrower across the poles. This is because, in the case of rapid spinning, the centripetal force overcomes the gravitational attraction trying to create a spherical shape. Earth is an example of this, hence the oblate spheroid shape. Jupiter is the fastest spinning planet in our solar system and therefore is more flattened than Earth. The sun rotates slowly, but there are other stars that spin rapidly and also have flattened shapes. Rapid spinning is also the reason black hole accretion disks, solar systems, and galaxies exhibit flattened disk shapes.

6. Temperature variation from equator to poles
The Earth is tilted 23.5 degrees relative to the sun. The northern hemisphere is tilted toward the sun for 6 months, while the southern hemisphere is tilted away, and vice versa. Consequently, while equatorial areas receive direct sunlight all year round, polar areas spend half of the year pointed away from the sun. This difference in sunlight exposure results in higher temperatures closer to the equator.
The Earth’s tilt also explains the extreme length of day and night at polar locations. While the length of the day at the equator is almost exactly always 12 hours due to the equator always receiving direct sunlight, the length of day and night at the poles is influenced by the Earth’s position relative to the sun.
The Earth’s tilt is also the reason that there are four seasons, and that as we approach the equator, the intensity of the seasons decreases until they are completely nonexistent right at the equator."



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 Quoting: Anonymous Coward 59127893


Most of those are complete lies. 1. Your camera is a POS get a new one.2. Sun and moon are only 3k miles away so easy to see in the sky. Also mountains.3. No seas level which is impossible on a ball is the reason.4. Ridiculous that a medium article writer thinks he has been to other planets. However FYI spheres look like circles from a distance so impossible to tell.5. Most things are not fucking spherical. This is also someone we can’t know seeing as the article it self is discussing the shape of earth.6. Just a bunch of non since. But this is my personal opinion.





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