? Dotted from LIGHT one single wire
low voltage power - supply and a thin wire … a simple electric circuit
what would you expect ? Suppose the current is large enough to make the wire glow, A B
You see the shape of the glowing spots And think of the space between them Have you seen this before ? Look closer … … and guess a reason for this
It’s a standing wave And how to get this ? All you need is … A magnet ! You are right ! and of course …. an alternating current
in addition: …with a direct current both of these pictures A and B are wrong !
What you really get … Think HOT !!! …is this