Go to IBM Patent Search and look
5,763,812 for a "Compact Personal Rail Gun" filed in 1995. It
is an educational introduction, if you can read through the legalese. His
design detects the projectile position by measuring the inductance of the
5 Steps To Improve Gun Safety For Kids
is a great infographic done by NationalBiometric.org to improve gun safety and reduce incidents
involving children and teens due to the accidental discharge of a firearm.
Tribology: Rtec Instruments specializes in
design and manufacturing of high tech instruments such as tribometers, 3d profilometer,
stress tester and atomic force microscope etc.
Finite-Element Analysis Programs
is a free package provided by Dr. David Meeker, and is an excellent choice for coilgun modelling.
The FEMM Tutorial
by David Meeker (based on Ian Stokes-Rees tutorial) is an essential introduction to using FEMM.
QuickField by Tera
Analysis does magnetic field plots for user-defined configurations. Highly graphical
and relatively easy to set up 3d configurations. The student edition is a free 3MB download
but the limit of 200 nodes will prevent you from solving real problems.
Solenoid Physlet is
a Java applet for a novel visualization of the magnetic field around a solenoid. This is part
of the Web Physics pages by Davidson College.
Field Precision creates 2D and 3D finite-element programs
for electrostatics, magnet design, thermal transport, charged-particle devices, electromagnetic
analysis and radiation transport in materials. The programs are moderately priced for consultants,
universities and small companies. Their web site also features several
educational items available for download at no charge, including an educational version
of 2D software for electrostatics and magnetostatics, a complete package for 3D time-domain
electromagnetic simulations, and textbooks on charged-particle acceleration and physics.
Magnet Formulas is a small web site devoted
to the vanishing art of practical magnet design without FEA (Finite Element Analysis). It offers
a number of very useful formulas.