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If you get him on a flight that goes above 35,000 on a clear day you can visually see the curvature. Perhaps you could do that? I guess you guys could build a s
by rdtwo 6y ago
If you get him on a flight that goes above 35,000 on a clear day you can visually see the curvature. Perhaps you could do that? I guess you guys could build a small home made rocket with a camera if you can get it over 35000 that might convince him.
- BenjiWiebe 6y agoSmall homemade rockets with a camera do not go to 35k feet. My brother is into high-powered rocketry. It takes hundreds of dollars just to purchase the motors to get that high. If you heavily optimized for weight and left out parachutes/trackers/cameras it might only be 100-200 dollars instead of 300+.
- pdkl95 6y agoYou don't need to send anything to 35k feet; you only need a camera with a decent telephoto lens and a long lake on clear day with calm winds. From one shore of the long lake, view objects at the far shore from normal standing height using the camera+lens. If you then carefully lower the camera to the ground, you can watch objects (boats! people! small buildings!) dissapear behind the curvature of the lake's surface. Dan Olson ("Folding Ideas") demonstrates this experiment in the video[1] I recommended in an earlier post[2]. [1] https://www.youtube.com/watch?v=JTfhYyTuT44 https://www.youtube.com/watch?v=JTfhYyTuT44 [2] https://news.ycombinator.com/item?id=24637001 https://news.ycombinator.com/item?id=24637001