Now, I saw something earlier but refrained from dragging this nonsense up here,
...so, I posted it on Truth instead kek (only because I have a flatearther on my follow list and this subject gets on my tits). Enjoy a bit of Carl Sagan... https://www.youtube.com/shorts/ScEZjDLgKco
Eratosthenes did the trigonometry before any concept of light refraction was known, and the numbers he found are still treated as correct.
The same effect can be created with a closer light source on a flat surface, if instead of assuming the light is coming like an = it were approaching as >. Just saying.
Now, I saw something earlier but refrained from dragging this nonsense up here, ...so, I posted it on Truth instead kek (only because I have a flatearther on my follow list and this subject gets on my tits). Enjoy a bit of Carl Sagan... https://www.youtube.com/shorts/ScEZjDLgKco
Eratosthenes did the trigonometry before any concept of light refraction was known, and the numbers he found are still treated as correct.
The same effect can be created with a closer light source on a flat surface, if instead of assuming the light is coming like an = it were approaching as >. Just saying.