I never said trigonometry was an assumption. Calm down.
I said the calculation around Earth's distance from the sun involved assumptions.
I'm not sure you're comprehending what I mean. The variables involved in the calculation were not taken from empirical evidence (aka, not scientific evidence).
Don't believe me? Great! Find out for yourself.
Without those assumptions, we cannot calculate anything. I think until a few minutes ago, you had no idea that assumptions were involved. If the assumptions are incorrect, the entire calculation is ruined.
'All the students', 'So many'?
Astronomy isn't some burgeoning field of research currently.
Do you think you need to believe in Man-made global warming to be a 'climate-scientist' these days? Yes, yes you do.
For every single person who I've discussed this topic with; The objections are the same, the level of knowledge around the subject is the same. No one ever thinks about it, because it couldn't be possible for the Earth to be anything other than what they know it to be.
So why do these students believe it? There are books with math in them, they solve the equations, get the right answers, and they move on. They're not thinking critically about anything they're being taught. 5 unicorns - 3 unicorns = 2 unicorns. It doesn't matter if the unicorns exist.
Eratosthenes didn't know how far away the sun was from Earth. Neither do you.
All of those calculations are based entirely upon assumptions. That's what I said in my initial reply. Unfortunately for you, that's a true statement.
At any rate, no, the results of his experiments only proved that there were two different shadows in two different locations. An entirely repeatable phenomenon that in no way proves curvature. Unless! You think your flooring is curved. I do not.
q) One of the Flat Earth claims is that the Earth cannot revolve at a different speed at the equator than it does at the North Pole, or very close to the poles.
a) That isn't a claim. Show me the source?
q) Do you agree with that?
a) No, plenty of people have been on a merry go round before. Your statement is the opposite of the truth, this experiment proves the earth cannot be a globe.
q) If so, explain how a basketball can revolve at different speeds at the center than it does at the poles.
a) So three of your statements revolve around you not understanding what FE is claiming. We're not off to an impressive start here.
q) Also, explain the change of seasons in a Flat Earth model.
a) The sun is closer in the north during the summer, and closer to the south in the winter.
q) Also, explain the solar eclipse, lunar eclipse, and Moon phases in the FE model.
a) Let's see if we can get past the first set of strawmen before we dive deep into several more.
The experiment you're talking about was done by Eratosthenes. The story is a joke.
But, since you believe it... one version of the story is this (the science is the same, so it doesn't matter). Two sticks were placed in the ground at different locations. One in his city, one 500 miles away. He and his friend logged the shadow on the stick at a particular time. One had a shadow, the other did not. Therefore, curvature.
Take two beer bottles, put them on your floor. Grab a flashlight. Hold the flashlight over the first beer bottle.
Congratulations, you're Eratosthenes.
Name one what? Experiment that proves the earth is flat and motionless?
We cannot measure the Earth's curvature. We know what the curvature should be (8 inches per mile^2) So at 2 miles away, there should be a 32inch drop. 10 miles, 67 feet. 20 miles, over 250 feet of drop.
If the earth has this curvature, then this is exactly what we'd measure at distance. Yet... we don't measure any drop over distance. Why is that?
While you can argue it requires puppetmasters to agree to coordinate, they already do, so the coordination is hardly out of the ordinary.
Look at everything else the controllers lie about. Why do you think a billion people agree on the state-lead 9/11 narrative? Do you think that requires any less coordination?
At it's core, the lie is the same - 9/11 happened the way they say it did because that's what they said happened, period. The heliocentric model is no different. You just didn't know that yet.
Physicists understand plenty of subjects around how things work on Earth. They guess at what is happening in 'space'. Two different things.
This statement probably means you don't know that the fundamental globe 'proof' is a pseudoscientific experiment from 'ancient civilization'.
Every single piece of the heliocentric model is based upon assumption, not empirical evidence.
Every test we've performed demonstrates that the earth is flat, and stationary.
You don't need to account for the curvature or the rotation of the earth while shooting long distance.
This is a lie.
If a bullet in the air for a few seconds needs to account for the earth's rotation, surely anything in the air for a few hours would have an incredible amount of rotation to account for. Each of these objects would be affected by the same force, ultimately. Planes, helicopters, blimps on far greater scale.
Yet, in reality, none of these objects account for Earth's rotation, or it's curvature.
How is that possible?
None of this is true. It is what's taught, however.
No flying objects; planes, helicopters, blimps or even bullets are affected one iota by coriolis. You would know why this is - coriolis is supposedly how winds are affected by not being attached directly to the spinning-ball-earth.
Which makes absolute sense. You aren't affected by the current of a river if you're not actually in the river. How then, does a plane that takes off in Alaska gain the necessary speed to land in southern California? It doesn't gain any speed, as it doesn't need to. The earth is not spinning underneath the plane. Empirical measurements agree with that.
Hot air balloons don't land 400 miles west of their take-off point for the same reason.
You mention two people sensing certain motion. Earth spins at over 1000mph. It orbits the sun at 67,000mph. It is pulled by the sun through space at nearly 500,000mph. And finally, our galaxy is moving at something like 4,000,000mph? And yet, we 'sense' none of that motion.
Strange.