Make Wi-Fi Visible #1 – Radio Frequency Propagation
As we all know, Wi-Fi is amazing. The only thing is… it’s invisible.
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”.
EPISODE #1 - RADIO FREQUENCY PROPAGATION
If we compare this example to Wi-Fi, the bulb could be an Access Point using an omnidirectional antenna. The signal strength would be the highest near the AP and it would decrease as you go away from the AP.
Does it make more sense?
“Episode #2 – Radio Frequency Reflection” coming next!