That link was where i got most of my current understanding from mathman, still quite limited on answers and doesn't really help as much as I was hoping it would.
thank you for your help though
Good evening every one, first post in this forum and only an amateur astronomer here so please be kind.
My question relates to the observable black drop effect, when watching the transit of Venus, at first when i looked up what might cause this effect the answer seamed to simply to be poor...