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About collisions of macroscopic objects:
- Can they be perfectly elastic in reality? If not is this a consequence of the 2nd thermodynamic law?
About microscopic collisions (between molecules, atoms or elementary particles)
- Can they be perfectly elastic? A collision between two elementary particles means that they really come in contact thus occuping the same point of space at the same time? (e.g annihilation between a positron and an electron happens when both lying in the same point in the same time?)
- Can they be perfectly elastic in reality? If not is this a consequence of the 2nd thermodynamic law?
About microscopic collisions (between molecules, atoms or elementary particles)
- Can they be perfectly elastic? A collision between two elementary particles means that they really come in contact thus occuping the same point of space at the same time? (e.g annihilation between a positron and an electron happens when both lying in the same point in the same time?)