Explaining TE and TM Modes
TE (transverse electric) and TM (transverse magnetic) modes in electromagnetics can be confusing.
Explaining TE and TM Modes Read More »
What is the Critical Angle?
What is the Critical Angle and Why does it Occur? The Quick Answer: When a wave passes from one medium into another and changes speed, it must also change direction
What is the Critical Angle? Read More »
What is Refractive Index?
Refractive Index Explained: Snell’s Law & Maxwell’s Equations The refractive index is the factor by which an electromagnetic wave slows down inside of a material relative to the speed of light
What is Refractive Index? Read More »
What is Magnetic Permeability?
What is Magnetic Permeability? Some of the most common questions I see online about electromagnetics is “what is permittivity” and “what is permeability.” I have a separate post answering the
What is Magnetic Permeability? Read More »
What is Electrical Permittivity?
What is Electrical Permittivity? The strict definition of permittivity is that it is a measure of how well a medium stores electric energy. This definition does little to give any
What is Electrical Permittivity? Read More »
How Metamaterials Work
How Metamaterials Work How do metamaterials work? Is there a simple qualitative answer? The answer must begin with a short discussion of why natural materials exhibit the properties they do.
How Metamaterials Work Read More »