Recent content by AlbertE

I agree wholeheartedly. I would have written (infact E says it perfectly clearly) - but anyway - I would have said... "This view of Relativity, that there are different perceptions of the same reality." Oh dear god - I just had a thought - what if General Relativity means different things...

This is EXACTLY the kind of thing I hate so much about trying to learn something. From the link above... ""Relativity teaches us the connection between the different descriptions of one and the same reality." This view of Relativity, that there are different realities," Look at the state of...

How can it be flat - when its clearly not flat? This is getting strange. I sometimes wonder whether science has somehow lost the plot. Then again - maybe I lost the plot - then again - maybe I never had the plot in the first place. I see what I see. I see matter forming tiny structures...

I need pictures - definitely :)

"The goal is to be able to think of edgeless boundaryless THREE-dimensional space, with no "space outside of space"---i.e. all existence concentrated in this full-bodied 3D space that we experience." I need pictures. :(

Sorry double post I didnt see that reply.

Can you just give me a quick example which explains in laymans terms "frame of reference"?

Can ANYTHING EVER be stationary? :)

This would contradict the following statement - with which I was "brought up" as it were. "Galaxies are flying apart, this means that at one time in the past, they were all together in one place". Is the above statement no longer true?

"The Big Bang occurred at every point in space simultaneously." How big was space when the big bang occurred?

Sorry - "what" happened everywhere at once? There was at the beginning of time, no everywhere!

For the galaxies - you would be a star if you included the strange way the spiral arms rotate. Find out why scientists have been puzzled by galaxy rotation and orbital speed of distant (from the center) objects compared to more central objects.

I disagree. Yup - its a thought experiment - so I have strong and large bits of cloth :) Ok - thinking along here... We know the big bang occurred around 13.7? billion years ago. If this is true - and I believe it to be the case, then unless it expanded at an infinite speed, it must be...

"Change of wavelength because of motion of the source." definitely NOTHING to do with the motion of the observer? If we knew the wavelength of light from a motionless source, then we would have a baseline I suppose.

"since it doesn't have motion through space" I am afraid I don't understand that. As I learn - I try to create images in my head if that's ok. So in terms of your reply - for which I am grateful, how does this sound? I am flying through space away from a star, I observe a redshift in the...