Hi all
wanted to ask following questions, just out of curiosity:
About visible light being electromagnetic radiation:
- since visible light is essentially electromagnetic radiation, has any experiments been made to take, let's say radiowaves, and increase the frequency to make visible light?
- since visible light has a magnetic component to it, has any experiments been made to see if this can be used to direct the light with the help of an external magnetic field (for e.g. creating holograms or invisibility without metamaterials)?
About using the magnetic component of an electromagnetic field to transfer power:
- I remember reading somewhere that the magnetic component does not propagate through the space between the sending and the receiving units. In other words that there is no wave between the sender and the receiver as there would be with the electric component does (such as in case of a radio wave). The question I have about this is whether this means that the transfer of the magnetic component can be considered "superluminal"?
thanks in advance,
JJ