The definition of nothing
According to perceived wisdom the entire universe came about when an object the size of a tennis ball of unimaginable intensity exploded.Putting aside how the tennis ball object got there in the first place, I am wondering what is the difference between 'nothing' and what we currently call 'space' ?
Comments (12)
Regarding nothing.. First, we have 50 shades of nothingness. There is partial vacuum, and also total (true) vacuum. True vacuum is believed to be impossible to maintain. Whenever we try to manufacture it, sub-atomic particles pop into being. Whether or not they are a result of quantum fluctuation, dark matter, transiting neutrinos, etc. is still unknown.
'Space' is a dimensional concept. If you have a vacuum it is within a defined space or area. When we say something is in a space we normally know the dimensions of that space.
'Outer Space' is different, sort of. It refers to the Physical Universe and the area encompassed by it's boundaries. We do not yet know the extent of area covered (but it grows steadily as our measuring techniques improve) or if it even has borders.
The simplest thing to do is enjoy thinking about it but don't expect to ever know the answer.
I accept the Biblical explanation even less by an order of magnitude. "And god separated the dark from the light and said it was good..." Oh puleeze!
BTW are you a Hungarian Gypsy?
BTW, in the UK we have an old sitcom series called 'Only Fools and Horses' and you are the spitting image of the main character, Del Boy. But you sound more like the Professor than a market trader.
My problem with an expanding universe has to do with the assertion that not only are the galaxies flying away from each other but they are accelerating. Nothing can accelerate without some force contributing energy to it. Scientists have never found the source of this force so they elected to call it Phantom Energy. I'm sorry but that sounds a little too much like Alice in Wonderland for my taste. You either find the source of this force and quantify it or IMO it doesn't exist.
The beauty of all this is whatever theory anybody comes up with it can never be proven or disproven.
Ken, the Red Shift can be explained by something like gravity actually slowing down the light wave or particle or whatever light is. A blue shift must be an approaching light source unless gravity can also speed up light which is doubtful. The observation of a blue shift alone blows the theory of an expanding universe right out of the water. You can't have it both ways.
So Love_stick, you ask what I'm into it's simply this. The speed of light is not finite. If it were, there could be no such thing as a black hole, once again, you can't have it both ways. Black holes and a finite light speed cannot exist at the same time, one negates the other.