A Gallery of Electromagnetic Personalities - A Vignette History of Electromagnetics.
AC and DC Measurements of Magnetic Properties - The superconducting quantum interference device (SQUID) susceptometer of Magnavolt Technologies is one of the most sensitive instruments for measuring magnetic properties.
AC Electromagnet - Educational page describing electromagnets, their construction and simple experiments.
AMAC International Inc. - Manufactures advanced magnets, cryostats and SRF cavities. The company provides low cost equipment and a variety of services to scientific community of accelerators, superconductivity and cryogenics.
Applied Computational Electromagnetics Society - ACES provides a forum for issues relevant to numerical modeling in applied electromagnetics.
Bartington Instruments - Bartington Instruments manufacture fluxgate magnetometers, magnetic field sensors and magnetic susceptibility systems for soils and rocks
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.
CEDRAT - Provides a fully integrated line of tools, products and services in electrical engineering.
Classical Electrodynamics for Undergraduates - Rough Draft-not complete.
Classical Fields - Online lecture notes in postscript format.
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.
Diverse Technologies - Instrument design and development, based on magnetics and optics, including electronics and software with mechanical and industrial design.
Educational Magnets from Indigo Instruments - Neodymium rare earth magnets, steel bar magnets and horseshoe/U-shape magnets for science education, industry and magic.
Electric Forces and Fields - The Official Darnell and Hwang Physics Association Webpage.
Electricity and Magnetism - An excerpt of a set of online course notes focusing on electricity and magnetism.
Electricity Fun - Fun projects demonstrating electrical principles. Great for kids!
Electrodynamics - PS lecture notes from Cambridge. Topics include Maxwell's equations, electrostatics, relativity, relativistic electromagnetism, energy-momentum tensor, quamtum effects, and Born-Infeld theory.
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.
Electromagnetic Coilgun Design - Learn about electromagnetic coilgun design principles. These web pages describe theory, design and a small prototype. What is a coilgun? It accelerates a piece of iron or steel down a tube. The tube runs through a series of electromagnetic coils (like solenoids). Some careful timing circuits energize each coil in sequence. The principle of magnetic attraction draws the projectile along at rapidly increasing speed.
Electromagnetic Coilgun Forum - Directory of links and a threaded discussion forum for electromagnetic coil gun technology.
Electromagnetic Fields and Forces - The forces on charged particles due to electromagnetic fields are introduced and related to the general case of force on a particle by a gauge field. Also covers the electromagnetic four-potential. Section of book A Radically Modern Approach to Introductory Physics by D. Raymond.
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 Spectrum - A NASA site listing the various wavelengths of electromagnetic radiation.
Electromagnetism - General electromagnetic theory, including static field equations, the origins of inductance, and EMR.
Electromigration - 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.
Electronic Filters - Real-world signals contain wanted and unwanted information. Therefore, some kind of electronic filtering technique must separate the two before processing and analysis can begin.
Fat Quarters Software and Electronics - Really slick magnetic field sensors. And the electronics to interface them.
Forcefield - Powerful Neodymium and Ceramic magnets and other products, sold new and surplus and at wholesale prices. Site also has a FAQ for magnets and electromagnetism, and magnetic demonstration images.
Galvani - A diagram copied from Luigi Galvani's work on frogs and electricity.
Georg Simon Ohm - Life (1789-1854) and research interests.
Group3 Technology Ltd. - Precision Magnetic Field measuring instruments, and fiber optically linked Distributed Control Systems.
Hendrik Lorentz - Lorentz (1853-1928) became known as the "Grand Old Man of Dutch Physics". He came up with the idea that the laws of nature must be invariant to a change of coordinate systems. The consequences of this were that time and space variables needed to enter into equations on an equal footing.
Hocking NDT Ltd. - Company specializes in eddy current non destructive testing (NDT). An overview of NDT is provided, including theory pages on electromagnetics and practical applications.
Hovemere Ltd - Scientific instrument company specialising in Optical and Electronic Measurement Systems, U.K.
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.
Introduction to Electromagnetic Waves - Basics of electromagnetic waves and their main applications.
Introductory Electromagnetics - Dot and Cross Products, Line Integrals of Vector Fields, Gradient of a Scalar Field, Divergence and Curl, Working in different coordinate systems, Coulomb's Law, Gauss's Law, Electric potential, Capacitance, Boundary Conditions, Stored Energy and Forces, Laplace's and Poisson's Equations, Method of Images.
Is it Possible to Generate Electricity Directly from Heat? - A brief explanation from How Stuff Works.
James Clerk Maxwell - The Scottish physicist James Clerk Maxwell (1831-1879) did revolutionary work in electromagnetism and the kinetic theory of gases.
JAVA Tutorial: Crookes Tube - An applet demonstrating the experiment of Crookes to show electrons travel in straight paths.
JAVA Tutorials: Capacitance - An applet which allows the user to adjust the properties of a capacitor and observe the change in capacitance.
KEMO - Electromagnetic equipment produces noise and unwanted components in measurement signals. KEMO equipment provides filtering.
Magmess Magnet - Over thirty years in magnetic field measuring and testing; products include gaussmeters, fluxmeters, measuring coils, etc.
Magnet Formulas - A small web site devoted to the vanishing art of practical magnet design without FEA (Finite Element Analysis).
Magnetics and Magnetism - General and specific information resources.
Magnetism and Magnetic Physics - An elementary primer on magnetism and magnetic physics. Contains questions frequently asked about the science of magnetism.
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.
Motion in an Electromagnetic Field - A JAVA applet which allows the user to vary the magnetic and electric fields, and then launch a test particle and study its ( nonrelativistic ) motion.
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.
Nijmegen-Amsterdam High Field Magnet Laboratory (HFML) - Research in very High Magnetic Field facility.
P10D Electricity & Magnetism - An introductory course on electromagnetism with all lecture notes in HTML.
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.
Physics 4B - Electromagnetism - An online course in introductory electromagnetism.
Properties of Magnetic Nanoscale Objects - Description of research at University of Cambridge, Nanoscale Science Laboratory.
Rail Gun - Principles of operation, instructions and links.
Science Ebooks Ezine - This site offers a variety of electronics and physics animations and visual aides for teachers or students.
Space Cryomagnetics Ltd. - Company provides a complete service from design, through assembly, to installation and commissioning. The focus is on custom-built and special magnets, but the company also supplies standard cryogenic equipment and consultancy services.
Stangenes Industries, Inc. - Transformers, current transformers, voltage dividers, electromagnets, X-ray power supplies, pulse forming networks.
Static Electricity Projects - Site devoted to projects utilizing static electricity (motors, generators) which are simple enough and can be relatively easily built.
Stefan Mayer Instruments - Fluxgate magnetometers, magnetic field compensation systems (active magnetic shielding), magnetic permeability meters, and more.
The Electromagnetic Field Tensor - A page of notes on advanced methods of electromagnetism
The MIT Course in Electromagnetism 2000 - John Belcher's course explains what is happening in electromagnetic experiments.
The Van de Graaff Generator Website - This site includes information on how Van de Graaff Generators work and instructions for building one. There are pictures of one built using these steps.
Vacuum Tube Diode - A demonstration of how a vacuum tube diode works.
Visualizing Magnetic Fields: Numerical Equation Solvers in Action - A book (with CD) describing modeling and visualization of magnetic fields. Also described are the numerical algorithms used for solving the equations.
VRML Gallery of Electromagnetism - Visualization of the electromagnetic field.
X-ray Optics and Microscopy at Stony Brook - Research descring 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.