Kitchener Gear Ltd.
Manufacturer of precision gears, gear boxes, gear grinding, gear shaving, splines, planetary gear assemblies, spiral and straight bevel miter gears. Emergency breakdown service - printing, mining, brewing, astronomy, a utomation, automotive.
http://www.kitgear.com/

Differential Equations and Oscillations
Many problems in physics are described by differential equations. As a complete discussion of differential equations is beyond the scope of this chapter we will deal only with linear first and second order ordinary differential equations.
http://www.physics.orst.edu/~rubin/nacphy/ComPhys/DIFFEQ/mydif2/

Gear Technology magazine
Gear Technology magazine and the geartechnology.com buyers guide. Find articles on gear design, engineering and manufacturing, and locate suppliers of gear machines, gear cutting tools and related services
http://www.geartechnology.com/

Gear Works, Inc.
Precision remanufactured gear machinery, replacement parts, and service. Specializing in Fellows' pre 1970 gear shapers, and Mikron gear hobbers.
http://www.vermontel.net/~gwi/

The Gear Industry Home Page
Gear Technology magazine and the geartechnology.com buyers guide. Find articles on gear design, engineering and manufacturing, and locate suppliers of gear machines, gear cutting tools and related services
http://www.geartechnology.com

Differential Forms in Electromagnetic Theory
BYU Electromagnetic Field Theory and Differential Forms Research Group
http://www.ee.byu.edu/ee/forms/forms-home.html

Mayuresh Enterprises
Gearboxes, Helical Gear Boxes, Helical Gear Boxes, Helical Geared Motors, Helical Geared Boxes, Twin Screw Helical Gear Boxes, Worm Gear Boxes, Aluminium Body Gear Box, Mumbai, India
http://www.mayureshgears.com

Foote-Jones/Illinois Gear
Manufacturer of large, industrial, gear products, including gear reducers and custom gearing.
http://www.footejones.com/

Gear Noise Short Courses
GearLab - Gear Dynamics and Gear Noise Research Laboratory
http://www.gearlab.org

Spiroid Gear Software
Consulting on gear design and development. Gear design software. Worm, worm face, hypoid, spur, helical gears, plastic gears, variable ratio rack.
http://www.zakgear.com/