A timely article for me. I'm in the middle of an engineering physics II class and we were discussing the nature of light just a few days ago. I actually laughed out load (LOL) when the professor gave a lecture on the quantum theory of light "generation". I'll answer appropriately on the test but I'm not buying any ridiculous theories about anti-electrons traveling backwards through time and interacting with "regular" electrons traveling forwards through time. God I love college...
I'll answer appropriately on the test but I'm not buying any ridiculous theories about anti-electrons traveling backwards through time and interacting with "regular" electrons traveling forwards through time.The universe is the way that it is, and not how you would wish it to be.
The idea can be made to sound ridiculous, but think of it this way. You have an electron going from point A to point B. You wish to calculate the measurable quantities associated with that propagation. So you do something very simple: you take every possible path from A to B, including those that go backwards in time, and you add them together with a very simple weighting scheme, and it gives you answers that are experimentally true to more than ten decimal places. You may not like it, but there's got to be something deep to it, for an idea that simple to work that well.