If you want, just skip most of this post and read everything below the dashed line...
On a globe earth, water (rivers, lakes, oceans) are never level only on a flat earth is this possible.
What?
The surface of a body of water 1/4 of a mile in length would be less than half an inch, which is far less than you can detect with the naked eye and any distance shorter than that gets really hard to measure. The curvature of the Earth over the length of a football field (300 feet), for example, comes to something like 1/10th of an inch.
It's flat enough to call it level, Dave.
I didn't use an argument from silence about the historic (not silent) fact that ancient Hebrew (Biblical) cosmology is flat motionless earth which is why I gave the "relevant" quote from Wiki. My argument was from your lack of knowledge on the matter.
It is an argument from silence. Your argument is that since the Bible doesn't say so explicitly and since ancient Hebrews believed the Earth is flat, therefore the biblical cosmology is flat earth.
Your implication is that the biblical cosmology is flat earth because it doesn't contradict the ancient Hebrews.
That is a classic argument from silence.
Moving "in" a car is not the same thing as move while "on" the top of a moving car.
It's actually precisely the same in this context. You only think its different because you'd be able to feel the air moving past you if you were outside the car, otherwise it would be exactly the same in every respect.
We live "on" the earth we do not live "in" the earth.
If you consider the atmosphere to be part of the planet, which everyone does then you are indeed about six miles inside the planet. Whether you consider the atmosphere to be part of the planet or not, the fact is that you are inside the atmosphere which is also moving along with the planet just as the air inside your car is.
That the atmosphere is held in place by gravity is absurd since planes, birds, and clouds move freely through the atmosphere.
This is the stupidest thing I've ever heard you say.
I will not debate the existence of gravity with you. There's enough stupidity happening here already.
The mechanism holding the atmosphere to the planet is the same as that holding you to the planet. And the same mechanism that must be overcome for birds and planes to fly through the atmosphere or for you to jump a centimeter off the ground or to pick something up. Rational people call it gravity but if you want to be stupid you can call it whipped cheese if you like.
I've not called you by any derogatory name.
That's because I haven't been the one saying idiotic things.
I've argued on behalf of a belief against a counter belief.
Barely.
What you've mostly done is ignore sound arguments allowing them to bounce off your mind as if stupidity has formed a force field around your brain.
I hardly ever argue to the man. If I think an idea is irrational, illogical, or inconsistent I say so.
I know! That's why this is so infuriating to me. You have no excuse for this insanity.
We accept, in "civil" debate, that all ideas are not the man making them, and that all men have and will change a belief at one time or another which is why we don't call our opponent in a debate a stupid lunatic not worth debating. One could argue only a lunatic would debate another one.
--Dave
Don't tempt me, David. If you think I haven't considered leaving this debate and simply putting you on ignore like I do everyone else that stubbornly sticks to ridiculously stupid things, you'd better think again. The ONLY reason you're not on my ignore list is because I think you're worth rescuing from this lunacy!
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This is what I propose. Since I really do not want to turn you into an enemy over something so ridiculous, I suggest we don't debate it any further. Instead, how about if I just prove the Earth isn't flat myself?
This is a very busy time of year for me but as soon as I get a few things together and have the time to spend a few hours doing it, I intend to physically measure the curvature of the Earth with my own equipment. But before I commit to doing it, I want a commitment from you. I want an endorsement from you as to my proposed method and a commitment from you that you will abide by the result.
Here is what I intend to do....
There is a pond in a neighborhood a few miles from where I live. It is situated in such a way that I have a direct line of sight from one end to the other than is approximately 1.3 miles in distance. If the Earth is a sphere that is 24901 miles in circumference then in 1.3 miles the surface of that pond should drop away 1.3 feet or 13.56 inches. See
http://earthcurvature.com/ for the math.
I have a 8" Schmidt-Gassegrain telescope that has plenty enough focal length (magnifying power) to see a target 1.3 miles away and I have a mount for the scope that I can set up so that the scope is nice and level (i.e. pointing at 90° to a line connecting the scope with the center of the Earth).
My plan is to simply set up a target, place it quite close to the scope and take a photo of the target nice and centered in the field of view. The view finder in my camera has nice small aiming points that will allow me to make quite accurate adjustments to the height of the target. Then I'll have someone take the target to the other end of the pond and if the Earth is flat, my scope should still be pointed at the same point on the target. If it's a globe then the scope should be aimed at a point about a foot above the where it was pointed for the closer photo.
Now, there is a margin of error. My equipment isn't poor but it isn't what I would call high precision either. I do however expect that my margin of error should be well within the 13.56 inches of expected drop from one end of the pond to the other. Also, there is the complication of waves to consider. I haven't fully worked out a system that will give me a consistent measurement above the water's surface but, once again, I should be able to work out something that still gets me well within a 13.56 inch margin of error. I know that I'll need to wait for a day when there is very little wind so as to minimize the target moving due to wave action.
Finally, I'm not a videographer. Chances are you'll have to settle for photographic evidence. In any event, I'll document as thoroughly as possible every step of the experiment including all the set up of the mount and scope as well as GPS coordinates of my location as well as each target location (I intend to take measurements from at least two or three locations at various distances.) Also, I will be relying on Google Earth to give me distances. As there are several variables that will effect the accuracy of my measurement, it seems distances to within .1 of a mile should be sufficient. (.1 of a mile translates to approximately .12 of an inch in target drop.)
So that's the gist of my experiment. Do you have any questions? Is there anything that you see that would constitute a fundamental problem with the propose method? Are there any suggestions that you have to improve on what I've suggested? Anything you care to contribute would be helpful. It's too bad you're not in Houston. We could do it together.
Clete