If the default (reset) value represents the speed of light in a vacuum, then does this applet let you increase the speed of light? Also, is it physically possible to have B greater than E? It seems to me that would only happen if light were slowed to less than 1 m/s. I read that physicists have slowed it to as little as 17 m/s. Would something bizarre happen to the nature of light if B were greater than E? Or would that not matter from a physics perspective.
I am grateful for your help in my understanding. Thank you.