Proof the Earth is round

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Here's something interesting I found on google AI:

"A submarine periscope's viewing distance is primarily limited by the height of the periscope above the water's surface and the curvature of the earth. Under ideal conditions, a periscope raised 7 feet above the water can see roughly 9.59 nautical miles (11 miles or 17.7 km), according to a calculation on Brainly. This distance increases with greater periscope height."

Except according to the earth's curve calculator there is 40.1 feet of target hidden height at 11 miles with the periscope 7 feet off the water. Doesn't really seem to add up. *shrugs
 
Thumbpicker said:
You're misunderstanding what is going on. That's the wrong formula. You need to calculate the length of two arcs. The first arc follows the curvature of the earth according to the earth's radius. The second arc has a larger radius because it represent the height of the bridge deck up on the pillons. Having a larger radius means it has a longer length.
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I think I can understand this concept theoretically. Thank you for providing some level of answer.
 
VonBonfire said:
I would think so, but what's the extra 2" he's talking about for?

Don't worry, you're in good company cause not a single person in here knows what the hell they are talking about they are just repeating what they heard elsewhere. A few people are bothered cause I'm asking questions they can't provide adequate answers for. One or two others are pissed that I am asking questions at all. :LOL:
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So in other words you should never repeat facts unless you can conclusively prove them with complete knowledge of how or why ?

Sorry dude, it’s a lot fucking simpler than you want to make it out to be. I don’t need to know the exact calculations to know that they built the fucking bridge 2” longer than the distance it spanned. Just like I don’t need to know the exact force applied to the oceans by the moon’s gravity to know the tides move.

Round ball. Two tall pillars erected level. Line at the bottom, line at the top following the arc. Measure them. You can do it with a ruler and a piece of string. If you got a problem with the math then you’ll have to take it up with the guys that designed and built it. Since you clearly know more about it than they do.
 
Let's not forget that bridges usually have an arc built into them as well, so the arc of the bridge would seemingly be greater than the arc of the planet?
 
The level of twisting and straw grasping that flat earth morons go through is hilarious. Just because they can't understand or grasp a toddler level concept, they believe that others can't. Stay in school, kids.
 
Floyd Eye said:
Sorry dude, it’s a lot fucking simpler than you want to make it out to be. I don’t need to know the exact calculations to know that they built the fucking bridge 2” longer than the distance it spanned.
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You read it and repeated it, but you don't really know how that figure was reached either yet expect me to buy it because "experts" said it. Reminds me of climate change arguments. Do you believe in that? Plenty of experts have stated it is real but "so just shut up and believe it dude" isn't a valid response. When you are calling me dude and f-bombing you just seem like another person who expects me to believe something they themselves don't really understand. *shrugs
 
There are no flat earthers. There are trolls who refuse to answer questions while pretending like theirs haven't been, and there are idiots without the ability to rationalize beyond the level of a five year old. You can't learn things for other people and you can't expect an adult who believes in laughable ignorant fantasies to have the ability to comprehend reality. This type of person is dumb on every level and proud of it. Stay in school, kids.
 
NowYou'rePlayingWithPower said:
There are no flat earthers. There are trolls who refuse to answer questions while pretending like theirs haven't been, and there are idiots without the ability to rationalize beyond the level of a five year old. You can't learn things for other people and you can't expect an adult who believes in laughable ignorant fantasies to have the ability to comprehend reality. This type of person is dumb on every level and proud of it. Stay in school, kids.
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Shit I thought you left 🙁
 
VonBonfire said:
The 23+ mile long ponchatrain bridge span has hundreds of feet of earth curvature to deal with and you're telling me it only needs to be built 2" longer to accommodate for it. I would like to know how they arrived at that 2" calculation. It doesn't seem like you really know.


Except it doesn't follow earth curvature formulas of 8" per mile squared. The towers are approaching 1 mile of distance between them, .8 miles actually, so how are they only 1 5/8" further apart at the top instead of like 6 or 7 inches? Doesn't that technically mean they are leaning towards each other? I could accept that but we are told they lean away from each other, due to earth's curve.
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I haven’t been reading all of this bridge discussion, but I imagine for the bridge to need to perfectly account for curvature, it would have to begin and end at the exact same height above sea level, which I doubt is the case such a long bridge.
Could be wrong tough.
 
Dan Gleesak said:
I haven’t been reading all of this bridge discussion, but I imagine for the bridge to need to perfectly account for curvature, it would have to begin and end at the exact same height above sea level, which I doubt is the case such a long bridge.
Could be wrong tough.
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Bridges go over water mostly. Even if water does curve can't you somehow still use the waters surface and a plumb bob as a giant level, and set every pillar on the ponchatrain bridge at 16 feet above the water's surface and boom, you have a good bridge right? Since all the pieces are pre-formed and assembled together on site would that not work? Are the individual pieces engineered for curvature? Would it have to be different calculations on a north-south run than east to west since the curve is different in those two directions?

I know this is theoretical stuff but I feel the more I'm looking into it the more I'm realizing that on a spherical earth, there is no true "level". Am I getting that right? Geometry "no such thing as a straight line"? A laser will curve at 23 miles, the length of the ponchatrain causeway, so what method calculates level? Just standard surveying equipment and measurements?
 
VonBonfire said:
You read it and repeated it, but you don't really know how that figure was reached either yet expect me to buy it because "experts" said it. Reminds me of climate change arguments. Do you believe in that? Plenty of experts have stated it is real but "so just shut up and believe it dude" isn't a valid response. When you are calling me dude and f-bombing you just seem like another person who expects me to believe something they themselves don't really understand. *shrugs
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Well there’s a difference between believing people who built bridges, buildings and pretty much everything man made on the planet that is structurally load bearing and believing people who are getting paid covertly to wipe out the fossil fuel industry.
 
Floyd Eye said:
Well there’s a difference between believing people who built bridges, buildings and pretty much everything man made on the planet that is structurally load bearing and believing people who are getting paid covertly to wipe out the fossil fuel industry.
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If I had just told you pro shooters and gun experts trust Tangoglio and left it at that you would've scoffed. Sometimes you wanna see the goods for yourself to believe it.

And btw you are now suggesting climate change is a scam and worldwide conspiracy with thousands of people involved which isn't really far removed from what has been asserted about globe earth deniers in this thread.
 
VonBonfire said:
If I had just told you pro shooters and gun experts trust Tangoglio and left it at that you would've scoffed. Sometimes you wanna see the goods for yourself to believe it.

And btw you are now suggesting climate change is a scam and worldwide conspiracy with thousands of people involved which isn't really far removed from what has been asserted about globe earth deniers in this thread.
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Except that it’s infinitely easier to prove the earth is a sphere than it is to prove manmade global warming is driving us to extinction
 
Floyd Eye said:
Except that it’s infinitely easier to prove the earth is a sphere than it is to prove manmade global warming is driving us to extinction
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Both of them, flat earth, and climate change, demand a worldwide conspiracy which is something you've been suggesting is impossible all along.

Bad Brain said:
I don't believe they would say this but they do offer broad claims of "refraction" nullifying direct observation.
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According to google AI the laser would curve at a long distance like 23 miles.
 
VonBonfire said:
Both of them, flat earth, and climate change, demand a worldwide conspiracy which is something you've been suggesting is impossible all along.


According to google AI the laser would curve at a long distance like 23 miles.
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Not really. Climate change can and has been argued from a POV that has no cut and dry proof as evidenced by “ Experts” on both sides of the issue. Both Russia and the US would have had to go to extreme lengths using technology that didn’t exist to fake space photos from 1969.
 
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