I’ve seen one multiple educational videos that draw light as two orthogonal waves traversing through space. What is that trying to represent?What exactly is going up and down?
Furthermore, why do people often make the analogy that light acts like a ripple in a pond?
In: Physics
If I hold a magnet up to some conductive wire and move it around the right way, it’ll make an electric current in the wire. If I run electric current through a wire, it’ll create a magnetic field around the wire
So, magnetism can create electricity, and electricity can create magnetism (this is because they are really two sides of the same coin, but that’s a different conversation). But if that’s the case, then what if you had electricity create magnetism, which then creates electricity, which then creates magnetism, which then creates electricity, etc.? Well, that’s what light is.
Here’s a well done, more in depth explanation by a professional physicist
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