Ever wondered why doubling the power of your FPV video transmitter won't double the range of your video link?
Well it's down to something known as the inverse square law which says that doubling the range requires four times the power - but why?
This video attempts to demonstrate why this is so.
Hopefully this makes things clearer but I didn't really plan this video, I just did it off-the-cuff so you tell me if it worked.