Comment on BladeRF-wiphy: Open-source, software defined radio modemparentComments−R0b0t15yWhy can’t they make visible light with an antenna?You can. The antennae are the size of molecules. LEDs emit light, your retinas receive them. The retinal dye molecules are tuned for specific frequencies just like you'd tune a macroscopic antenna.
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You can. The antennae are the size of molecules. LEDs emit light, your retinas receive them. The retinal dye molecules are tuned for specific frequencies just like you'd tune a macroscopic antenna.