Recent content by xhu2688

I am actually reading GR, but frankly, I need to be convinced first (by observational data with convincing physical explanation) that the Universe is indeed expanding, otherwise, all the complicated math is useless if the Universe is not expanding, but some other things produced the redshift...

Thanks. Now I got it: the cosmologic redshift is given by Z = R_to / R_te - 1 = (R_to- R_te) / R_te R_to the expansion coeffient of at observer time, and R_te the expansion coefficient of emitting time. Now this is considered to be the main redshift in Hubble's Law: (R_to- R_te) /...

Sure. Thanks,

Ok, can I ask questions on mainstream textbooks or papers?

Since Hubble's Law has been around a long time, so, after almost 100 years, to challenge its validity looks like dumb and stupid. So let me be that dumb guy, or maybe the bad boy that spoils the whole thing. Here let me start with the Redshift in general. There are three Redshifts proposed till...

Hi, Everyone, Though I am not a physics major, my family has two, and I read a lot of fundamental physics books and am a self-researcher on many, yes, many physics topics. So, I feel it is is time to present my answers to some of the tough questions that the whole Physics academy needs to...