Look out from the cockpit. The high 30's it's beyond obvious. You can also see it on the water easily. There are huge lakes with powerlines on them and the curvature is easy to spot. You can also set up a laser from shore, make it level and point it out over a body of water and then boat further and further out only for the laser to point higher and higher on the boat like in this experiment.
You can see the ISS and Satellites traveling at enormous speeds from the ground. You can also determine their position through radio triangulation or radar if you so desire to show just how far up they're going and how fast they're going.
Look out from the cockpit. The high 30's it's beyond obvious. You can also see it on the water easily. There are huge lakes with powerlines on them and the curvature is easy to spot. You can also set up a laser from shore, make it level and point it out over a body of water and then boat further and further out only for the laser to point higher and higher on the boat like in this experiment.
https://wtvi.pbslearningmedia.org/resource/hawking_genius_ep06_clip01/where-are-we-ch-1-the-circumference-of-the-earth-genius-by-stephen-hawking/
You can see the ISS and Satellites traveling at enormous speeds from the ground. You can also determine their position through radio triangulation or radar if you so desire to show just how far up they're going and how fast they're going.
Why are you linking Steven Hawking propaganda? Here look at amateur footage of a simple drone, no curve. https://youtu.be/dP3mPRMJsjw
Since you want to link to laser tests... https://www.bitchute.com/video/A7z6vG1nOUr2/ https://www.bitchute.com/video/gC9yNr9s3BL0/ https://odysee.com/@Antwniaco:1/flat-earth-experiment-with-long-distance:5
I have done both.