28K views · 427 reactions | Our Horizon is Not Physical It's Optical #flatearth #earth #podcast #horizon #visuals #wisdom | Flat Earth Dave | Facebook

Measuring the surface flatness of a right angle prism’s hypotenuse is challenging with coherent laser interferometer systems because the prism’s retroreflective design causes multiple interference patterns But constraining surface flatness is critical for ensuring predictable light paths and minimizing wavefront aberrations and distortion, particularly for prisms The new ZeFlat 3D Optical Profiler makes these kinds of measurements easy without requiring adding any additional coatings to the opti