Video author: Dr. John D.
Title: Viewing Brighton Seafront from Worthing with a Nikon P510
A mirrored version of this was posted on the Flat Earth Media board, but I'd like to talk about it.
This slide in particular:
Light is not refracted downward? Over the sea? At night? This isn't right.
Even with a stable air mass, with standard temperature gradient, an atmoSPHERE will refract light downward. That's typical and to be expected. It's not a peculiar occurrence that requires "specialized" environmental conditions.
Maybe in an atmoPLANE that would be true. But he's talking about "according to the Sphere/Globe earth model," and in that model a standard lapse rate in temperature/pressure/humidity WILL refract light downward.
In fact, evidence to answer Dr. John's of "photographic proof" is present within his own imagery.
Note the "compression" of the lower floors of the building in the foreground of Sussex Heights. That's indicative of a greater refractive index at the lower angles than at the higher elevation.