Is there a simple way to prove to someone that light travels at c in a vacuum? I was having a debate with a friend and he said the speed of light isn't real.
Mars is a few light-minutes away. Although we don't have the technology to get there in a few days, traveling to Mars in a few days is far below the speed of light.Basically I told him about an article I read about a new technology that could get us to Mars in a few days, I told him it would probably be near the speed of light (just a guess) and then he said the speed of light isn't real, whatever that means.
Unless you are an expert in all the numerous fields, and unless you are willing to put time and effort into learning each one of them, at some point, ALL of us have to accept the opinion of experts. I'm a physicist, but I trust my GI specialist when he tells me during my colonoscopy that there are two small polyps removed and that they are benign. (OK, that may have been too graphic, but you get the idea).It's more about me learning what to say next time such a conversation comes up. Nothing I hate more than accepting scientific theories and not knowing how to justify my opinion when someone says otherwise.