The Fresnel Zone explained
7:59
LoRa/LoRaWAN tutorial 7: Fresnel Zone
16:49
RF power versus antenna gain (the results may shock you)
18:35
The Fresnel Lens: the Invention That Saved 1000 Ships
22:40
How a Lens creates an Image.
28:55
TDT01: Introduction to Transmission Lines
39:06
RF and Antenna Basics in 802 11
15:43
Diffraction: Why Does It Happen? (Physics Explained for Beginners)
52:54