Main Question or Discussion Point
I heard about this from my teacher. What is it? Is it real? Is it the meadiem Light waves effect? Any help accepted.
Welcome to PhysicsForums, Whitedragon!Whitedragon said:I heard about this from my teacher. What is it? Is it real?
Sure we do, light travels by electromagnetic induction. Changing electric fields induce magnetic fields, and vice versa. When the fields are sinusoidal in both time and space, you get a monochromatic EM wave.Whitedragon said:Makes sense i quess, but i still don't like the fact that we don't have an answer to how light travels. It desterbs me greatly.
Ha, I said you be happier if you accepted my answer...Whitedragon said:It desterbs me greatly.
Aye. Does 'creationism' ring a bell?pervect said:They set up preconcieved notions of how reality "ought to be", in their personal opinion. They then rail against the scientific establishment when it rudely points out that that's not how reality has actually been observed to behave.
I ask questoins to which I want answers. If I ask a question I don't care it it's worth asking, and I don't care if i don't like the answer as long as it's reasonable. I just want to know why things happen.DrChinese said:Ha, I said you be happier if you accepted my answer...
The question of "what does light travel through" is an artificial problem anyway. Why would it need to travel though anything? You can ask any number of similar questions (such as "why is water wet?"). Rather than get distracted by the questions we can ask, it is fruitful to focus on questions that get us to the next stage of our understanding.
As to the existence of the ether: if you change your definition enough, you can simply say that spacetime itself is the ether. Or phase space, or the quantum vacuum. Those are perfectly acceptable answers. Does that help?
I know it is disappointing, but sometimes the answer to such questions really is that the question itself is irrelevant, useless, or meaningless.Whitedragon said:I ask questoins to which I want answers. If I ask a question I don't care it it's worth asking, and I don't care if i don't like the answer as long as it's reasonable. I just want to know why things happen.
Whitedragon said:but before i don't accept it, I want to know what it was considered to be. What people thought it was. Before i can judge something i must fully understand it.