I don't think so. It's indeed a property of water to settle to a flat plane. I can measure it with a ruler. It's a little crazy to suggest it's another way of saying "I can't see the curve" because we CAN'T see the curve. That's the point. You guys are talking about special equipment and how lasers won't work, etc. To me it sounds like rationalizations for something no one wants to admit.
C'mon, that's hardly an accurate or controlled demonstration. Zooming in doesn't even look like the line is on the actual horizon.Money shot picture, showing that a horizontal line connecting two points on the ends of the horizon is lower than a point in the center of the horizon, indicating that the horizon is bulging up in the middle. 'cause of the earth's curvature.
Because as noted there is no perfect vacuum in space. There's supposedly space debris as well. No natural phenomena here on earth have constant acceleration. Not even man made.
What can you sense (In a primary manner -- IE without the use of deduction or inference) that suggests we live on a spinning ball?
I think you missed the point
No I got it. I think you're missing my point. I'm saying that sure, if you back up it doesn't look that fast, but from our perspective around 6ft off the ground, it is. A 24,000 mile earth spinning in a day is not comparable to the surface speed of a basketball spinning around in 24 hours.
That’s why I said to look at it from a different perspective. A perspective different than “if I can’t replicate it in my bath tub, it doesn’t exist in the universe”. Zoom out
To be clear I appreciate the suggestion, and I'm not saying perspective isn't important in helping to grasp otherwise difficult ideas.
It's showing you can observe the curvature with the naked eye like you were wanting to see.
Yeah, I get it. The distinction between the earth and horizon is blurry.
So do know of any clips that last an hour or more so we can see the visible land masses rotating?
I can distinguish it easily and my eyes suck without my glasses.
I can't. Should be easily replicable with a hi-res pic on a clear day. Most people don't think you can see curvature at 35k feet anyways, but whatever.
How does this mean the earth is a ball? If it were round but flat and you went to 70k feet it would appear to be curved because you'd be seeing an edge.
I thought you gotta be at 70k feet to see the curve?
Seems to be a mixed bag at 35k feet. On a clear day with no cloud obstruction most people can positively observe a curve between 50k & 60K feet.
It shows there is a curve. If you continued to move in 3 dimensions above the earth and observed that curvature everywhere you'd be able to composite your observations which would resemble a ball.
I don’t know of any hour long clips of the earth, especially from a video camera that isn’t moving. You’d have to be about a million miles away for that. Also, it would be a pretty boring video.
I'd love to see a video of a real life spinning earth ball.
The radio transmission towers are line-of-sight — that is they have to have a direct path from one to the other. The radio waves don't curve. This is similar to 5g tech.