can we use solar energy instead of electromagnetic waves for very long communication

Huh?

Do you mean using a parabolic mirror with a shutter or something?. That first post is rather lacking in detail.

Light is EM radiation.

Yes.

Just use a mirror and bounce solar light signaling to the moon... and beyond.

 

If you glue the mirror onto a speaker cone, will transmit the audio modulating the sunlight.

Miguel

well, Until it goes Cloudy, or it`s Night time, or the receiver is a few metres away, or....

 

 

well lets just say I`m not ready to deep 6 my mobile fone just yet

The light would not be very well collimated so after quite a short distance the signal would be greatly reduced. Far easier to use a laser if you want it to be visible.

this may sound kinda Obvious, but doesn`t all our Comunication energy Already come from the Sun?

 

(albeit indirectly)