So lets say we have a red light wave, can you have something particularly simple amplify it's wavelength, I know you could take a picture of it and send it out again the opposite side, but that's far sought. Oh and if an electromagnetic wave is absorbed by an atom, how exactly do you tell the kinetic energy(thus the wavelength) of the electron emitted? And if long wavelength has too little energy too little energy to knock out electrons how are they detected? and if they can't even knock out electrons how do they ever cease to exist. I'm talking about low energy photons light radio waves or infrared waves, how exactly do these antennas work? is there no efficient way to catch or create very long wavelength light waves? Oh and since you're here, the new pf layout looks pretty cheap, and the ads on top.. oh well maybe I'm just getting used to it.