Pretty please could some one explain it to me. I am very confused. the only thing i understand is that it is dimensionless. but what has it to do with
- value in early epochs (what?) of universe
- being bigger in different parts of electromagnetic spectrum
- and what exactly does it describe?
Basically i have no idea at all (an doing basic particle physics/cosmology type ou course but this was in a bit to do with electromagnetic interactions.
Anyone who has a clue and could kinda put it in idiot language tonight it would be appreiciated.