if light and radio waves are all the same phenomenon, why cant my phone use one component as both the camera and the antenna?

Question

As above

In: Physics

Answer 1

Good comments here already, also consider older remote controls that operated on infrared – infrared is a wavelength of light, but human eyes can’t see that range, but the sensor on your TV can “see” it. The length of the waves of radio energy all function the same, it’s just that the smaller wavelengths are visible as light … A TV antenna can’t “see” the nanometer range of visible light, but it can see the multiple meter long waves of radio energy used to transmit television signals, and your eyeballs can’t.