Recent content by energyq

And, by the way, someone may want to correct the Wikipedia entry for "Mass-energy equivalence" from which I copied the statement "In physics, mass–energy equivalence is the concept that any mass has an associated energy and vice versa." (My bolding.) Unless I misunderstood the statement. (And I...

Izkelley Thank you for taking the time to explain. It's much appreciated. You've clarified quite a few things for me, at least enough to keep my brain waves busy for a bit while they work it all out. If you don't mind, I might ask more questions later.

No worries, you're not being rude. As I said, I know nothing about physics and so am trying to understand. I thought that every mass has an associated energy and vice versa. In my non-physics mind, that means that an electromagnetic field, which is a form of energy, would have a mass...

First off, I know nothing about physics so if this question seems bizarre, that's probably why! In theory, are there conditions that would permit electromagnetic energy to block or limit the passage of oxygen (normal, everyday oxygen levels)? Is electromagnetic energy denser than oxygen under...