Flat Earth Black Swan 5

If the earth is stationary, then measurements would measure no rotation. Flat earther Bob Knodel used a $20,000 optical gyroscope to measure rotation. Therefore the earth is not stationary.



13 measurements of earths rotation: Rotation of the Earth
Youtuber harrycallahan uses low-cost MEMS gyroscope to measure the rotation of the earth.  You can do this yourself: