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Sorry, I accidentally posted my previous post too early.

Sure, I learn new things this way too. :)

It can be scary considering flat earth.  People might laugh at us if they were to find out we think the earth is flat after all!  And we would have to admit we were duped and lied to and we were wrong.  That's pretty hard to face.  It would take a lot of humility that's for sure.  I'll be glad to admit that the globe theory is correct if it's proven to me in a way I can understand. 

Either way, we can just keep asking questions.  We don't have to become a Flat Earther or a Glober.  We can just wonder about how things work.

I can't cover too many things at once though and you've posted a bit more than I can get to for now, but I'll go through them one by one as I can.

1.  So according to that meme, water is level everywhere and by level they mean that it curves the same way the earth curves.  Is that right?

So when they use water to check for level and build long buildings are they actually making sure the buildings curve in the same way the earth curves? 

Do long buildings curve up a bit in the middle and down on the sides?  Are they two small to notice the curve?  How long would they need to be to start to notice a curve?

When you check to see if a table is level do you check to see if it curves like the earth?  Is the curve of a long table too small for us to notice? 

At what length does the curve of water become measurable?  At what length does it become visible?


2.  So the windmills that are in front appear to be larger than the ones in the back.  Did you ever study drawing?  I'm no good at drawing but I have seen the diagrams art students use to make things look further away.  They progressively get smaller in the distance.  I posted about that with the long hallway drawings earlier.

The windmills on the left and right look smaller than the ones in the middle.  Why is that?  Is that because they are going over the curve?  If the windmills are going over the curve left and right and getting smaller as they go, why isn't the water curving on the left and right too?  The water line is straight across.

Here is a video showing how things start to disappear bottom up in the distance even on a flat surface.  This would be really easy and fun to try out.  I would love to see it with a larger disc for better visibility.



Also, if boats go over the curve as they move away there should be an downward arc to their movement as they move away.  Kind of like watching a roller coaster cart descend over a hill.  Hard to explain but this meme shows it, although I don't like how it's calling people "globetards" . :/

I've never seen where the front end of the ship is lower than the backside as it goes down.



3.  So I'm not understanding why my viewing cone is limited to only 30 miles deep and only 3 miles wide.  The photos I showed of the view from Mt Tamalpais were much wider than 3 miles. 

As for viewing the curved horizon I posted a table with the curve calculations in the Phoenix skyline photo response I posted for Marion.  Correct me if I'm wrong but it seems to me that we should be able to see the curve quite well from the math on that table.

1. Buildings are perpendicular to the surface level. They follow the normal vector of the Earth surface at their position. They don't have to conically curve outwards themselves due to their small size compared to the slight curvature of the large sphere, that's why this is disregarded in construction and architectural designs of skyscrapers, for example.

2. & 3. As I said previously, in these zoomed in photos you only see a tiny portion of Earth's surface horizontally, but a proportionally much larger portion of the surface in front of you. That's why you can't ever see a curvature of the horizon judging with your eyes from ground level, you'd have to be much higher up to see a large portion of the "horizon" or rather surface, to see it curve.

Do you expect to see a tilted ship? Or a tilted skyscraper as it disappears behind the curvature. No, it's a few degrees at most, that's enough to completely hide the object behind the curvature.

The table experiment may demonstrate angular resolution, so it explains why boats and other distant objects can disappear and reappear completely zoom in. It however doesn't explain how an object that's partially obstructed by the allegedly completely flat water surface can be brought back into view completely by zooming in. This has never been observed, demonstrated or proven to happen. Another point for the globetards

Water is NOT curved. That is science, and that is common sense. There should be a bulge measurable with a level, a laser, SOMETHING even on just 100 x 100 feet of water -- even more so, if you measure a 40x40 mile section.

I tried to calculate how much drop there would be in 100 feet, but earth curve calculators I found either didn't work at all, or didn't work with feet. And didn't work with an input of less than one mile. So if someone can find a calculator that can tell us how much the earth would drop away over a 100 foot distance, that would be interesting to see.

I can guarantee the amount would be infinitesimal. Not only would it be hard to detect something so small in ideal conditions, but if you have a 100-foot swimming pool you're trying to do this experiment over, a room that size would have tiny disturbances of air that would likely distort the surface of the water far beyond the margin of error for such an experiment.

And when you say the curve of the earth should be detectable over a 40 mile stretch of water ... um, Matthew, what do you think we are talking about with all these pictures of ships disappearing below the surface of the water as they disappear, and what about the sun setting over a body of water in such a way that the sun disappears behind the surface of the water? By the way, what is the flat earth explanation for that video I posted of the sun setting over the ocean, in which the sun disappears behind the water?

Once again, visual evidence of the curvature from here: