Constructing a radio-like antenna to detect visible light is theoretically possible, but the antenna must be extremely small, on the order of hundreds of nanometers. The rapid oscillation of the electric field in visible light makes it challenging for current electronics to record the field directly. While photo receptors in the retina are not classical antennas, they operate at a molecular level that is significantly smaller than the wavelength of visible light. These receptors absorb electromagnetic energy and trigger neural signals without providing detailed information about the light. Efficient electromagnetic collection in the solar spectrum requires antennas that can match the size of the wavelengths involved.
