This is the underlying physics behind 3D glasses. Created by David SantoPietro.

Watch the next lesson: https://www.khanacademy.org/science/physics/light-waves/interference-of-light-waves/v/wave-interference?utm_source=YT&utm_medium=Desc&utm_campaign=physics

Missed the previous lesson? https://www.khanacademy.org/science/physics/light-waves/introduction-to-light-waves/v/electromagnetic-waves-and-the-electromagnetic-spectrum?utm_source=YT&utm_medium=Desc&utm_campaign=physics

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their…

A brief overview of important propagation fundamentals when using Radios. Made by the Film Board of Canada for the Royal Canadian Air Force.

Wireless radios use MCS rates to express a few pieces of information: the QAM modulation depth, number of spatial channels, coding rate. What do these mean? Check out our IW episode for details!

VIDEO on QAM modulation depth VS. required SNR: https://youtu.be/IbUflaeJcU8
VIDEO on Radio output power VS. required SNR: https://youtu.be/lPDNG1mjeq8

All these components combined with a few others (channel width, guarding interval length, etc.) determine the maximum throughput a wireless link can achieve. But, the real throughput you are likely to see in a radio online interface is most likely just approaching this maximum limit.

Multipath propagation, changing weather conditions, interference, physical obstructions, and antenna alignment mismatch are other factors influencing the actual throughput. In the end, you have to understand that the throughput you see depends on many factors and it should be taken as such.