So let’s start by explaining what makes Wi-Fi invisible? Wi-Fi uses radio frequencies electromagnetic waves to transfer information. These waves have wavelengths that are not within the visible space.
Light is also an electromagnetic wave. However, its wavelength is within the visible spectrum (between 330 nm and 700 nm). This is what make the light visible to the human eye. In fact, any electromagntic radiation having a wavelength between 330 nm and 700 nm is called “light” or to be precise “visible light”.
This means that we can explain Wi-Fi concepts using light analogies. In this set of articles, that is what we are going to do using simple drawings.
Episode #4 - Radio Frequency Diffraction
Written by François Vergès
"Episode #1 - Radio Frequency Propagation" is still available!
"Episode #2 - Radio Frequency Reflection" is still available!
"Episode #3 - Radio Frequency Refraction" is still available!
"Episode #5 - Radio Frequency Scattering" coming next!