Can a region of space be free of energy?

  • #1
I have read that it is impossible to create a true vacuum that is completely free of matter, energy and radiation due to the effect of blackbody radiation.

Also that in interstellar space there is on average 1 hydrogen atom per cubic centimeter (or something like that) and various background radiation.

Does this mean that every point of space is occupied with energy or the influence of energy of some form? Gravitational etc. And no true vacuum however small can exist.

is it also the case that all energy in the universe (what ever it is) must then be in a sense connected if only by its influence on each other.

And so it makes sense to speak of one entity composed different areas of electrical potential.
 

Answers and Replies

  • #2
422
3
Yes, this is true for the same reason that you can't get a temperature of absolute zero kelvin, there will always be some level of heat energy. There is also vacuum energy. Yes, technically, every area in space has some influence on every other area of space, because if nothing else, there is always something in an area of space to contribute to gravity via the stress-energy tensor. As for the electric potential thing, I'm not sure, but it sounds right.
 
  • #3
That's kind of confirmed my suspicion thanks! I just need to learn some of the hard physics to flesh out whats going on.
 

Related Threads on Can a region of space be free of energy?

  • Last Post
Replies
20
Views
2K
  • Last Post
Replies
20
Views
4K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
3
Views
9K
  • Last Post
Replies
1
Views
2K
Replies
4
Views
1K
Replies
10
Views
3K
Replies
11
Views
2K
Replies
24
Views
2K
Replies
1
Views
614
Top