About This Reference

Purpose

Applications of Electromagnetics is designed as a long-term technical reference rather than a linear textbook. Its purpose is to make the connections between field theory and real systems easy to recover:

\[\boxed{\text{physical intuition}+\text{equations}+\text{worked numbers}+\text{simulation}+\text{measurement}+\text{engineering reality}.}\]

The site intentionally spans classical RF/microwave engineering and atomic/quantum sensing. Those subjects use different language, but both begin with electromagnetic fields and how matter responds to them.

Author context

This collection is curated by Rajavardhan Talashila, an RF/microwave engineer and Rydberg-atom sensing researcher. The unusual breadth of the site — antennas and EMC beside Rydberg EIT, atomic magnetometry, VLBI, spacecraft EM and precision measurement — reflects an effort to keep the underlying electromagnetic connections visible.

Editorial structure

Whenever practical, a mature topic page contains:

Physical intuition in 30 seconds
Governing equations, with assumptions and units
Physical interpretation
Worked numerical examples
Visualization or simulation
Measurement methods
Engineering reality — loss, tolerance, bandwidth, noise, calibration, finite geometry
Common misconceptions
Applications
Literature — foundational source, classic text, modern review and representative experiment
Related topics

Not every page needs every item; the structure is adapted to the subject.

Source policy

External images are linked to their source and attribution/license information where available. Literature links favor primary papers, institutional repositories, textbooks, standards organizations, universities, national laboratories and agencies rather than anonymous summaries.

Numerical values should be interpreted with their stated assumptions. Technology specifications, standards and regulatory requirements can change; where a current requirement matters, consult the controlling standard or official source.

Scope and limitations

This is a technical and engineering-reference project, not a substitute for a safety standard, regulatory certification procedure, medical guidance, or a manufacturer’s validated design process. Equations are often idealized deliberately so that the physical dependence is visible before complexity is added.