Flat Earth delusion・Fresnel Lens Plane Magnifier US$30.60 ｜ boycott facebook

[@aznmutt15]

How does the atmosphere refract light that way? Why does it affect light only? Why doesn't this change due to varying conditions? Why does it set? Oh amd it's refraction, not perspective.

[@ledaclytemnestra6962]

he said he'd debunked your group picture with this vid and ban out me his FE haven group ╮(╯-╰)╭ I just have no idea what does this experiment show or proving what ?

[@pdxdragon7479]

Since you subscribe to Sabine Hossenfelder and Dr. Becky, I'm assuming you're not a flat Earther. Here's a response I made to a flat Earther who presented this video as some kind of evidence for a flat Earth: The flaw in this video is that the index of refraction for air that the light in the video shines through is less than 1.0003, depending on temperature, humidity and pressure. The index of refraction of whatever that lens is made of is between 1.4 and 1.6. A ray of light is bent by refraction when it crosses the boundary between mediums with different indexes of refraction at an angle. In reality, the light from the sun makes most of its trip to Earth in the near vacuum of space, with an index of refraction very close to 1.0. As that light crosses from the vacuum of space to the increasingly dense atmosphere it does bend, but the densest atmosphere, at the surface, has an index of refraction of less than 1.0003. The shallower the angle of the border the light crosses the more the light is bent. This angle is shallowest, and bends sunlight the most, at sunrise and sunset. It can bend the light about 1°. Sorry, a lens requires structure and material. There's just nothing with the proper structure and a high enough index of refraction floating around in the sky to act like a lens.

[@ledaclytemnestra6962]

thanks for the comment. I'm not one of them, of course.