flat earhers

[Ferrocyanide]

No such thing as gravity?  go jump off the roof!

Flat earthers claim that things fall to the ground because the Earth, Sun, Moon and such as accelerating upwards.
I don’t know, maybe there is some strings holding the Earth and pulling it upwards or there is a rocket below the flat Earth.

However, that doesn’t explain why gravity is not uniform on Earth.
If you have a scale for chemistry, one that has enough precision, the numbers that you get depends if you are at the Equator or closer to the North Pole or South Pole.
This is why such scales need to be calibrated for your location.

Also, a long time ago, I think it was NASA that had designed 2 satellites to map Earth’s gravity. The 2 satellites are in the same arbit. I think they are 100 m apart. As they orbit the Earth, they constantly measure the distance between them and this indicates variations in the gravity field.


Another technique is this
https://www.smithsonianmag.com/science-n...-30976030/

“GOCE orbits the Earth at a mere 254.9 kilometers (158.4 miles) above the planet's surface. At that altitude, there is enough atmosphere that the satellite's orbit will quickly decay, so GOCE continuously fires an ion thruster with xenon gas to keep steady. GOCE carries 3 pairs of platinum blocks that can detect changes in gravity as small as 1 in 10 trillion. Data from November and December of 2009 were assembled into the colorful map above, known as the geoid.”



Another concept that I had heard, this was when the internet was new, I emailed a guy about his idea and he was emailing me.
His idea is that there is no gravity. Things fall down because of the cosmic background microwave radiation. This radiation pushes things to the ground.
The year must have been 1997 or 1998.
I told him his concept is broken. It would mean that you can shield something from gravity. Put an object under a table and it won’t experience gravity. Or go into a cavern or go into a building.
Also, there is the wave property of light. Light won’t interact with objects smaller than their wavelength. So, objects that are 1 m in size and less won’t be pushed by the CBMR.
Also, the intensity of CBMR is pretty low.
After that, he stopped responding to me.