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Journal of Mathematical Physics: All Topics

Feynman path integrals for the inverse quartic oscillator
S. Mazzucchi The Feynman path integral representation for the weak solution of the Schrodinger equation with an inverse quartic oscillator potential is given in terms of a well defined infinite dimensional oscillatory integral. An analytically continued Wiener integral representation for the solution is provided ... [J. Math. Phys. 49, 093502 (2008)] published Thu Sep 4, 2008.
The transmission property of the discrete Heisenberg ferromagnetic spin chain
Qing Ding and Wei Lin We present a mechanism for displaying the transmission property of the discrete Heisenberg ferromagnetic (DHF) spin chain via a geometric approach. With the aid of a discrete nonlinear Schrodinger-like equation which is the discrete gauge equivalent to the DHF, we show that the determination of tran ... [J. Math. Phys. 49, 093501 (2008)] published Thu Sep 4, 2008.
The flip-over effect in self-similar laser-induced plasma expansion
Nathan P. Baxter and Sergei V. Shabanov We present a rigorous study of a dynamical model for a nonsymmetric expansion of laser-induced plasma plumes into the vacuum. The model is used in the laser film deposition technique and for remote chemical analysis in the so-called laser-induced breakdown spectroscopy. It defines a particular class ... [J. Math. Phys. 49, 093101 (2008)] published Wed Sep 3, 2008.

physicsworld.com: headline news

Cloud-seeding ships could combat climate change
Thu, 04 Sep 2008 09:20:56 -0000
Pumping salt water into the air could keep global temperatures stable for decades, say scientists
Shedding light on artificial atoms
Wed, 03 Sep 2008 14:30:46 -0000
New technique of 'amplitude spectroscopy' works at frequencies where conventional spectroscopy is difficult
Graphene pioneers bag Europhysics prize
Tue, 02 Sep 2008 14:45:56 -0000
Andre Geim and Kostya Novoselov recognized for discovering new carbon material just one atom thick

Physics Today magazine

Wireless is Everywhere - Sponsored Link
Mon, 01 Sep 2008 08:00:00 -0500
Whether you’re testing wireless devices or using them in your application, NI has a solution for you. Learn how you can benefit from using Wireless Technology.
Modeling the physics of storm surges
Mon, 01 Sep 2008 08:00:00 -0500
Despite the potentially catastrophic consequences of storm surges, the physics of surge generation and propagation has historically been poorly understood, and many misconceptions about surges still exist
The gas centrifuge and nuclear weapons proliferation
Mon, 01 Sep 2008 08:00:00 -0500
Uranium enrichment by centrifugation is the basis for the quick and efficient production of nuclear fuel—or nuclear weapons

 

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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.
Meta Description: [ Basic Electronics online animations and simulations for electronic teachers or students. Free online troubleshooting using ohms law. ]

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.
Meta Description: [ CdTe and CdZnTe gamma detectors and detector arrays, equipped with ohmic contacts, are fast response devices that are not sensitive to hole trapping. ]

CEDRAT - Provides a fully integrated line of tools, products and services in electrical engineering.
Meta Description: [ Electromagnetics, electromechanics, piezo active materials, thermal effects, Softwares, consulting, prototypes, measurements and training. ]

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.
Meta Description: [ BYU Electromagnetic Field Theory and Differential Forms Research Group ]

Electricity and Magnetism - An excerpt of a set of online course notes focusing on electricity and magnetism.
Meta Description: [ 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.

Electromagnetic Induction - A virtual experiment on creating electric current with a changing magnetic field.
Meta Description: [ You can conduct Faraday's experiment regarding the motion of magnetic fields and electromagnetic induction with this interactive Java tutorial. ]

Electromagnetic Inertia - Derivation and proof of the inertial properties of electrostatic and magnetostatic fields.
Meta Description: [ Electrostatic and magnetostatic fields exhibit inertia - theoretical treatment ]

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.
Meta Description: [ This site is intended for students age 14 and up, and for anyone interested in learning about our universe. ]

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

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.

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.
Meta Description: [ Gaussmeter hire & EMF shielding (EMS) for electromagnetic interference (EMI) and radiation of electromagnetic fields, which may affect computer screens and health and safety. ]

High Field Magnet Laboratory (HFML) - Research in the high magnetic field facility in Nijmegen, the Netherlands.
Meta Description: [ Research in very High Magnetic Field facility ]

Hovemere Ltd - Scientific instrument company specialising in Optical and Electronic Measurement Systems, UK.
Meta Description: [ Hovemere is a world leader in the development of high-performance optical and electronic systems for use in research and commercial applications. ]

How a Compass Works - Explanation of how compasses work and how to make your own, from How Stuff Works.
Meta Description: [ A compass is a simple device that is highly useful for navigation. Find out why a compass always points north and learn how to build your own compass. ]

How a metal detector works - Interactive Java tutorial explaining the principles of electromagnetic induction.
Meta Description: [ This Java tutorial explores how electromagnetic induction is used in a metal detector. ]

How an Electromagnet Works - Explanation of principles and experiments, from How Stuff Works.
Meta Description: [ Electromagnets are found in motors, tape decks, hard drives, VCRs and tons of other devices. Find out what makes an electromagnet ]

How Solar Cells Work - Principles of operation of silicon photovoltaic cells.
Meta Description: [ Solar cells use sunlight to produce electricity. But is the 'solar revolution' upon us? Learn all about solar cells, silicon solar cells and solar power. ]

How Van de Graaff Generators Work - Description of Van de Graaff generators and static electricity, from How Stuff Works.
Meta Description: [ Van de Graaff generators are famous for producing static electricity. Learn about Van de Graaff generators and find out why Van de Graaff generators were invented. ]

Is it Possible to Generate Electricity Directly from Heat? - A brief explanation from How Stuff Works.
Meta Description: [ Is it possible to generate electricity directly from heat? ]

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.
Meta Description: [ Design formulas for air core solenoid and Helmholtz coil electromagnets. ]

Magnet University - Educational information on electromagnetism, permanent magnets, and the application of magnetic materials. The site is maintained by the company Rare-Earth Magnetics.
Meta Description: [ Rare-Earth Magnets - Large Selection of Rare-Earth Neodymium Permanent Magnets ]

Maxwell's Equations - Description of Maxwell's equations.
Meta Description: [ 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.
Meta Description: [ A portion of Number 476 ]

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.
Meta Description: [ Paradoxes of modern electrodynamics, парадоксы современной электродинамики ]

PowerLabs Rail Gun - Electromagnetic capacitor powered 20kJ rail gun research.
Meta Description: [ PowerLabs 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.

The Electromagnetic Field Tensor - A page of notes on advanced methods of electromagnetism
Meta Description: [ The Electromagnetic tensor ]

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.

Vacuum Tube Diode - A demonstration of how a vacuum tube diode works.
Meta Description: [ This interactive Java tutorial explores vacuum tube diodes. ]

VRML Gallery of Electromagnetism - Visualization of the electromagnetic field.
Meta Description: [ Syracuse University VRML Gallery of Electromagnetism ]

Wireless Lab at Nizhny Novgorod University - Laboratory of Physical Fundamentals and Technologies of Wireless networks at Nizhny Novgorod State University, Russia.

Wondermagnet.com - Images of magnets and their uses, experiments, a discussion board about magnet-related topics, and an elementary primer on magnetism and magnetic physics.
Meta Description: [ Forcefield - Amazingly powerful magnets and other products, sold at inexpensive wholesale prices! ]

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.
Meta Description: [ X-ray Optics and Microscopy at Stony Brook ]