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Yes. That's true. And the Earth is a very large sphere so you have to get very high above it to notice a change. That's the "for all intents and purposes" part.
The point is, is that if you rise on the vertical from a sphere, the horizon will drop away from you, you will have to look down to see the horizon.
The construction and calculations below show that if the altitude is very small compared to Earth's radius, the line of sight as measured from local vertical is very near 90 degrees. The Earth's radius is about 6371 km. For the line of sight to fall 1 degree you would have to elevate your point of view by about 370000 km!
This graph demonstrates why this correction is so important for sextant observations: the initial slope is very steep, and at sea an error of one degree leads to a position error of 60 nautical miles... By comparison, your body's ability to tell "level" from "not quite level" is probably a couple of degrees - so you really need the altitude of a plane (or a high mountain next to the sea) to convince your brain that the horizon you are seeing is not "level". According to my graph, 1 degree happens at about 1000 meters, and 2 degrees at 4000 meters. That seems consistent with your own observations.
For those that don't know, Goebbels was the Minister of Propaganda for the NAZI party, whose majority of scientists (over 1000) have been recruited by the US government to infiltrate the universities and aeronautics divisions of government. (see Project Paperclip)
“If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.”
Um, it wasn't NASA who came up with that. The round part is a couple of thousand years old, at least. The Sun part, about 500.
b) The earth is a globe, spinning 1000 MPH at the equator, while hurling around the sun.
I choose to trust my senses, and not rely on what others that so obviously have an agenda try to tell me. To me, NASA stands for Nazis Are Still Active.
originally posted by: occrest
NASA has lied enough time that i will never be convinced that
a) Man has ever went into space.
b) The earth is a globe, spinning 1000 MPH at the equator, while hurling around the sun.
c) that NASA is a reliable source of information.
I choose to trust my senses, and not rely on what others that so obviously have an agenda try to tell me. To me, NASA stands for Nazis Are Still Active.
Joseph Goebbels is quoted to have saidFor those that don't know, Goebbels was the Minister of Propaganda for the NAZI party, whose majority of scientists (over 1000) have been recruited by the US government to infiltrate the universities and aeronautics divisions of government. (see Project Paperclip)
“If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.”
The study of micro electronics has nothing to do with whether or not the Earth is flat.
originally posted by: Phage
a reply to: DenyObfuscation
The explanation is unsatisfactory.
The Earth is, indeed, flat. It's obvious, why is it that recently, so many have the need to convince us of that?
Yes i cherry pick. i see which cherries are foul, and which ones are good, and choose accordingly.
originally posted by: Phage
a reply to: occrest
The study of micro electronics has nothing to do with whether or not the Earth is flat.
As I said, you cherry pick.
A requirement of maintaining your ignorant little world view.
a reply to: Phage
You can't see the world is round
Water will always level out.
Why? If gravity keeps water "level" then gravity will keep the water level the same across the globe.
If the earth was a globe, there would be a 'hump' of water that is over 500 miles high between the two locations.