https://en.wikipedia.org/wiki/Palermo_Cathedral
“The device itself is quite simple: a tiny hole in one of the minor domes acts as pinhole camera, projecting an image of the sun onto the floor )” - It never specifically says west to east but that’s what’s it’s saying.
![But I need that point now [Medium]](https://lemmy.world/pictrs/image/f2e3e5ac-2a30-4d24-a029-5a7b247d91a3.jpeg){kind=link}
It will travel north to south (and vice versa) throughout the year, but during the day
east to westwest to east surely.Shadow would move east to west, beam of light moves west to east.
Yeah the line on the floor is what’s North/South. The beam of light is moving west to east.
The beam of light moves the same way as a shadow would. Think of it as a “gap” in a shadow.
No it reverses it, the hole in the ceiling is creating a pinhole camera effect.
https://en.wikipedia.org/wiki/Pinhole_camera
https://en.wikipedia.org/wiki/Pinhole_camera#/media/File:Pinhole-camera.svg
https://en.wikipedia.org/wiki/Palermo_Cathedral “The device itself is quite simple: a tiny hole in one of the minor domes acts as pinhole camera, projecting an image of the sun onto the floor )” - It never specifically says west to east but that’s what’s it’s saying.
The pinhole effect reverses the image itself, but that is irrelevant. The beam of light will always travel west to east on the northern hemisphere.
The ‘image itself’ is the entire sky, which is being flipped.