Category Archives: flat earth (debunking) physics

FE/GE experiment: water clinging to ball

In the flat earth/globe earth “debate”, the flat earthers say “water doesn’t cling to a ball”. A possible way to prove that water can comform to the exterior of a sphere is to use a Van de Graaff generator upside … Continue reading

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Globe earth and the horizon experiment

For a person with eye level at 6 feet, the horizon would be 0.0419° below eye level. To do an experiment to test this, we need a way to measure very small angles. A very cheap and easy way is … Continue reading

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The moon and the globe earth

I took this picture of the moon a few days ago. From the angle of the moon, we can see that the sun’s light comes from “below the flat earth disk”. This wouldn’t fit with a flat earth model, for … Continue reading

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Some (unsuccessful) experiments with magnetic bearings

In the confrontation of the globe earth and flat earth models, still believed by many religious oriented people or uneducated conspirationists, the flat earth supposedly doesn’t rotate, because we can’t feel it. It doesn’t occur to flat earthists that the … Continue reading

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Water does stick to a “ball”!

Recently, NASA showed a video of an astronaut washing his head. While the guy was bald, this was an interesting demonstration often requested by flat earthers. Flat earthers say ‘water seeks its level’ and so on. They don’t believe gravity … Continue reading

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Can a rock reflect light?

Many flat earth advocates mention that the moon emits its own light because rocks “don’t reflect light”.  I’ve done an experiment. Here’s a decent rock. Not black, not white, just a reasonable gray. The experiment setup: a white melamin board … Continue reading

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Spinning ball model

If we were to reproduce a spinning ball holding water, we should have gravitation exceeding the centrifugal acceleration (300 times stronger normally). The gravity (acceleration) holding the water should be: g = Gm1/R². Since we will scale down the model, … Continue reading

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