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Science: Physics: Electromagnetism

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Applied Computational Electromagnetics Society
ACES provides a forum for issues relevant to numerical modeling in applied electromagnetics.

Basic Electronics
Online book which covers topics from ohms law to digital circuits. Contains interactive troubleshooting simulations.

CdTe Gamma Detectors Equipped With Ohmic Contacts
Gamma induced currents in CdTe and CdZnTe semiconductor detectors equipped with ohmic contacts are not sensitive to hole trapping.

Provides a fully integrated line of tools, products and services in electrical engineering.

Differential Forms in Electromagnetic Theory
The differential forms research group at BYU is investigating the use of the calculus of differential forms in teaching and research. Differential forms have been used to express Maxwell's laws since early in this century, but many of the advantages of forms as a tool for applied electromagnetics have only recently been discovered.

Electricity and Magnetism
An excerpt of a set of online course notes focusing on electricity and magnetism.

Electricity from Lightning
Site addresses the power of lightning, and the question of how to harness that power, whether there are substantial reasons not to.

Electrodynamics in Relativistic Notation
Describes Lorentz scalars, covariant and contravariant vectors and tensors, and how to use relativistic notation to describe charge conservation and the inhomogenous wave equation for potentials.

The Electromagnetic Field Tensor
A page of notes on advanced methods of electromagnetism

Electromagnetic Induction
A virtual experiment on creating electric current with a changing magnetic field.

Electromagnetic Inertia
Derivation and proof of the inertial properties of electrostatic and magnetostatic fields.

Electromagnetic Radiation Spectrum Poster
A poster of all known ranges of EMR including gamma rays, x-rays, ultraviolet light, visible light, infrared, microwaves, radio waves.

Electromagnetic Railgun System
Design, construction and theory of electromagnetic railgun. Matthew Massey's Web Site.

Electromagnetic Spectrum
A NASA site listing the various wavelengths of electromagnetic radiation.

Electromagnetic spectrum redefined
Bharat radiation from excited atoms of radioisotopes and XRF sources is a new part of electromagnetic spectrum.

Authors' web pages for the textbook "Electromagnetism", by G. L. Pollack and D. R. Stump, published by Addison-Wesley.

Surface electromigration refers to the directed motion of atoms (adatoms) at solid surfaces, grain boundaries and interfaces which is caused by an electric current in the bulk of the material. It is considered a key factor determining the reliability of integrated circuits.

Electrostatics equations
Main equations and formulas of electrostatics.

EMCoS - Electromagnetic Consulting and Software
The company specializes in consulting on electromagnetic problems and in development of sophisticated software for electromagnetic simulations, as well as in data processing and visualization. Based in Tbilisi, Georgia.

EMF Shielding in Buildings
Remediation of EMF interference in buildings. Custom designed, quality EMF shielding.

High Field Magnet Laboratory (HFML)
Research in the high magnetic field facility in Nijmegen, the Netherlands.

Hovemere Ltd
Scientific instrument company specialising in Optical and Electronic Measurement Systems, UK.

How a Compass Works
Explanation of how compasses work and how to make your own, from How Stuff Works.

How a metal detector works
Interactive Java tutorial explaining the principles of electromagnetic induction.

How an Electromagnet Works
Explanation of principles and experiments, from How Stuff Works.

How Solar Cells Work
Principles of operation of silicon photovoltaic cells.

How Van de Graaff Generators Work
Description of Van de Graaff generators and static electricity, from How Stuff Works.

Is it Possible to Generate Electricity Directly from Heat?
A brief explanation from How Stuff Works.

Magnet Formulas
A small web site devoted to the vanishing art of practical magnet design without FEA, including field formulas for simple conductor configurations, air core solenoids and Helmholtz Coils.

Magnet University
Educational information on electromagnetism, permanent magnets, and the application of magnetic materials. The site is maintained by the company Rare-Earth Magnetics.

Maxwell's Equations
Description of Maxwell's equations.

Maxwell's Equations and Electromagnetic Waves
An overview of Maxwell's Equations and how they determine the speed of light.

Negative Permittivity and Permeability Material
The true "left handed" material is described. In this medium, light waves are expected to exhibit a reverse Doppler effect.

Paradoxes of Modern Electrodynamics
Provides analysis of some modern electrodynamics concepts including peculiarities and «white spots» in the model of an electromagnetic wave. The site is in English and Russian.

PowerLabs Rail Gun
Electromagnetic capacitor powered 20kJ rail gun research.

Science Ebooks Ezine
This site offers a variety of electronics and physics animations and visual aides for teachers or students.

Spin Science
Research conducted at the University of Amsterdam utilizing x-ray magneto-optical techniques for the study of thin film and nanometric magnetic systems.

Static Electricity
Website by Jeremy Smallwood on static electricity. Describes the physics phenomena, possible electrostatic damages, materials for electrostatic solutions, and standards. Gives advice on solution of common problems.

Static Electricity Projects
Site devoted to projects utilizing static electricity (motors, generators) which are simple enough and can be relatively easily built.

Vacuum Tube Diode
A demonstration of how a vacuum tube diode works.

The Van de Graaff Generator Website
This site includes information on how Van de Graaff Generators work, typical classroom demonstrations, and instructions for building one.

VRML Gallery of Electromagnetism
Visualization of the electromagnetic field.

Wireless Lab at Nizhny Novgorod University
Laboratory of Physical Fundamentals and Technologies of Wireless networks at Nizhny Novgorod State University, Russia.
Images of magnets and their uses, experiments, a discussion board about magnet-related topics, and an elementary primer on magnetism and magnetic physics.

X-ray Optics and Microscopy at Stony Brook
Research describing use of coherent soft X-rays for optics experiments, including Fresnel zone plates, to produce the smallest focused spot of electromagnetic waves for studies of biological and materials science specimens.


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