In sound waves it’s the disturbance in matter that causes sound but how do electromagnetic waves work in vaccum. Help me understand how can energy oscillate?
In: 1
Well energy doesn’t oscillate. You have the EM field it fills all space. You need energy to excite the filed. The electric and magnetic components of the EM filed can excite each other in just the right way to allow waves to travel. You got some energy and that energy moves through the EM filed. The energy excites a point and then the next and so on but you know it gradually reaches its maximum then shrinks like a wave. The EM filed allows that energy to be transmitted but it only works because the electric and magnetic components can create each other. But thas no coincidence since Special Relativity we know that the electric and magnetic fileds are actually one filed the EM filed. One point excites the next and so on. Thats how any wave works.
Latest Answers