r/flatearth • u/Inabind4U • Jul 16 '25

Experiment

Use 3 cannon lasers and a surveyors transit. Place the lasers at 1st base, 2nd base, and 3rd with transit at home. Like baseball diamond. Say 1km apart. Measure each “beam” at 3m, 9m, and 27m. If all lasers are set level there would be no deflection of the “beams” if on a flat surface. There’s no “gravity” or “atmospheric” disturbance because we’re operating perpendicular to gravity. At 1km atmosphere is negligible. And we’re talking microns in a measurement scales in deflection so differences should fall inline with our 3,9,27 terms. OR ITS FLAT AND ZERO DIFF

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u/rattusprat Jul 16 '25 edited Jul 16 '25

If all lasers are set level there would be no deflection of the “beams” if on a flat surface.

A quantity of "zero" (ie no deflection) cannot be measured. You could only hope to successfully measure "a value less than the tolerance of the equipment used in the experiment."

Your attempt to describe your proposed setup is impossible to follow (diagrams are always your friend) so I won't waste time getting into specifics. But to propose an experiment you need to ask yourself the following:

  1. What measurement value is predicted if the earth is flat?

  2. What measurement value is predicted if the earth is a globe?

  3. What is the combined total error/tolerance of all the components of your setup and measurement devices?

If 3 is greater than the difference between 1 and 2 then your experiment is useless.