the myth of flat earth debunked again

[Warden_of_the_Storm]

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Ok so and that proves you can take a photo. Again prove to me that, a humans vision, should be able to see great distances on a flat plane.

Prove that it can't.

 

[Phil G]

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What is your proof that human vision has the ability to see that far on a flat plane.

Strange question. If you claim the earth is flat then what I see at the higher location should be what I see at the lower. it's the same distance.

But the earth being spherical, the distance anybody can see over the horizon can be estimated by the formula explained here:

How far is the horizon?

www.capoferri.com

There wouldn't be any need for this formula if the earth is flat

 

[Phil G]

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Ok so and that proves you can take a photo. Again prove to me that, a humans vision, should be able to see great distances on a flat plane.

See my post above #886

 

[Bradskii]

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Ok so and that proves you can take a photo. Again prove to me that, a humans vision, should be able to see great distances on a flat plane.

Everest from Kathmandu. About 120 miles:

 

[d taylor]

Prove that it can't.

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I have, everyday i look outside, proves human vision is limited.

 

[Warden_of_the_Storm]

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I have, everyday i look outside, proves human vision is limited.

And how limited is that vision at ground level versus human vision at a higher elevation?

 

[Phil G]

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I have, everyday i look outside, proves human vision is limited.

Obfuscation & distraction from real evidence

 

[essentialsaltes]

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Any time you want to meet at a beach, a park, etc.. and prove your so called observed globe earth. Oh and do not bring your science book, i want you to prove by observation the earth is a globe.

Twenty- six miles across the sea
Santa Catalina is a-waitin' for me
Santa Catalina, the island of romance, romance, romance, romance

(From Santa Monica, it's a bit further.) But it's so visible and obvious they made a song about it.

There's a narrow (and low in elevation) isthmus at Two Harbors, but there is land there. It's one island, not two.

But from the shoreline at Santa Monica, the island is not continuous. It looks like there are two islands with water between them.

If you go up to PCH, you can see *more* of the island, but it's still not quite continuous.

Just as with ships at sea, the bulge of the earth's curve occludes things from the bottom the further away you are. Increasing your own elevation let's you see further over the bulge, but the bulge is still there.

 

[Ophiolite]

Everest from Kathmandu. About 120 miles:

The Great Trignometrical Survey of India, which took six decades to complete, determined the height of Mount Everest from multiple stations set at a distance of (according to ChatGpt, because I couldn't afford the time to do an exhaustive search myself) 250 km, about 155 miles. So a close order of magnitude to your example. As you likely know the mountain was named after Sir George Everest who was superintendent of the Survey from 1823 to 1843. Where possible I try to remember to use the Tibetan name for the mountain, Chomolungma. (See wikipedia article.)

From the north peak of Izzaccihuatal in Mexico, at just under 17,000' I was able to see a substantial portion of the 18, 491' Pico de Orizaba. From maps.google I get a distance of around 146km, or 90 miles, between the two. It's certainly the furthest I have seen from one land point to another.

 

[sjastro]

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I have, everyday i look outside, proves human vision is limited.

It is laughable flat earthers can't even get their stories straight.
Here is an image of Chicago's skyscrapers taken from Mount Baldy in Indiana Dunes National Park taken over 60 km of Lake Michigan's water.

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It is used as 'proof' by flat earthers the earth is flat as the skyscrapers should have dipped below the horizon for a spherical earth.
Clearly this contradicts the 3 km human vision limit nonsense expounded in this thread since the skyscrapers were visible to the naked eye at a distance of 60 km.

So why are the skyscrapers visible in the first place to the human eye.
It was a case of good timing as it is an image of a mirage when cold dense layer of air sits above a layer of warmer less dense air.
The warm ground heats the bottom few centimetres of air, refracting sunlight up to your eyes to create an “inferior mirage”.
If a layer of warm air sits above your line of sight, with a cool layer beneath, you get a “superior mirage”. Light bends down towards the denser air, making the object appear higher than it is.

 

[Phil G]

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I have, everyday i look outside, proves human vision is limited.

It's amazing to me that some FE proponents try to claim a person shouldn't be able to see beyond 3 miles on a spherical earth but should on a flat earth, while others try to claim the human eye can't see beyond 3 miles on either.

I reckon FE proponents think something like this:

The earth is flat, therefore anyone who claims otherwise is wrong. Any evidence they provide is also wrong, therefore I will claim it's wrong by any means possible, even if that means not addressing their point, or contradicting other things I have said or what other FE proponents have said.

 

[Phil G]

It is laughable flat earthers can't even get their stories straight.
Here is an image of Chicago's skyscrapers taken from Mount Baldy in Indiana Dunes National Park taken over 60 km of Lake Michigan's water.

View attachment 345016
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It is used as 'proof' by flat earthers the earth is flat as the skyscrapers should have dipped below the horizon for a spherical earth.
Clearly this contradicts the 3 km human vision limit nonsense expounded in this thread since the skyscrapers were visible to the naked eye at a distance of 60 km.

So why are the skyscrapers visible in the first place to the human eye.
It was a case of good timing as it is an image of a mirage when cold dense layer of air sits above a layer of warmer less dense air.
The warm ground heats the bottom few centimetres of air, refracting sunlight up to your eyes to create an “inferior mirage”.
If a layer of warm air sits above your line of sight, with a cool layer beneath, you get a “superior mirage”. Light bends down towards the denser air, making the object appear higher than it is.

View attachment 345018​

Like this:

'Hovering ship' photographed off Cornish coast by walker

An illusion called "superior mirage" caused the vessel to look like it was hovering above the sea.

www.bbc.com

 

[essentialsaltes]

Clearly this contradicts the 3 km human vision limit nonsense expounded in this thread

This claim is so bonkers. I mean if you hover over my avatar, or click through to the profile. That picture of downtown Los Angeles was taken from about 15 km. And the hills behind are considerably further away than that.

It doesn't require any special conditions or camera work. I see it out my window every day. The view from the sidewalk almost sold me on this house before I even went inside.

 

[Ophiolite]

Twenty- six miles across the sea
Santa Catalina is a-waitin' for me
Santa Catalina, the island of romance, romance, romance, romance

(From Santa Monica, it's a bit further.) But it's so visible and obvious they made a song about it.

There's a narrow (and low in elevation) isthmus at Two Harbors, but there is land there. It's one island, not two.


View attachment 345015

But from the shoreline at Santa Monica, the island is not continuous. It looks like there are two islands with water between them.

If you go up to the top of the cliffs overlooking Santa Monica, you can see *more* of the island, but it's still not quite continuous.

Just as with ships at sea, the bulge of the earth's curve occludes things from the bottom the further away you are. Increasing your own elevation let's you see further over the bulge, but the bulge is still there.

This thread is proving remarkably effective at evoking my old memories. First was my recollection of a house move during a lunar eclipse in Singapore (#879), then the sight of one Mexican volcano from another (#893). Now your post has triggered another one. A few months after the volcano climbing adventure I was sailing across the Santa Barbara Channel in a small yacht owned by the same friend I had climbed the volcano with. (I think he harboured it in Ventura, because he couldn't afford Marina del Rey). My thanks to everyone who has accidentally prompted my recollections and for enduring the telling here.

 

[sjastro]

Like this:

'Hovering ship' photographed off Cornish coast by walker

An illusion called "superior mirage" caused the vessel to look like it was hovering above the sea.

www.bbc.com

I expect accusations of a photoshopped image to follow......

 

[Phil G]

I expect accusations of a photoshopped image to follow......

I'll be surprised if there isn't, and then there will be slew of other photos to "prove" the earth is flat

 

[essentialsaltes]

From the Arc de Triomphe to Montmartre is 4 km. (And obviously you can see beyond Montmartre)

What version of Photoshop did they have in 1866?

 

[sjastro]

I'll be surprised if there isn't, and then there will be slew of other photos to "prove" the earth is flat

I'm still waiting for an apology from one of the flat earthers in this thread who claimed this image of Jupiter I took is a fake unless I could prove to him it moved across the sky which is problem since it was taken with a clock driven equatorial mount!

 

[sjastro]

From the Arc de Triomphe to Montmartre is 4 km. (And obviously you can see beyond Montmartre)

What version of Photoshop did they have in 1866?

View attachment 345019

It wasn't called photoshop in those days but daguerreotypeshop.

 

[Phil G]

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Ok so and that proves you can take a photo. Again prove to me that, a humans vision, should be able to see great distances on a flat plane.

So to get back to this strange question, here are the approximate locations from where I took both photos:

And here are the line of sight indicators for the distance between my locations and the island:

If you're ever anywhere in the Dublin/Wicklow area in Ireland, I would be happy to take you on this route with map, compass and GPS so that you can see the evidence for yourself. I'd even buy you a decent meal for your trouble!