Illustration from Newton's Principia depicting the solar origin of the tail of Halley's Comet
 






News

May 8, 2008 Devinder Grewal publishes an article this month in International Cement Review on maintenace of large ball mills. You can read the PDF here.
Aug 5, 2007 Ben Ewers passed his licensing examination and is now a registered Professional Engineer in the State of California.
Mar 28, 2007 Decision by the U.S. District Court of Appeals for the 8th Circuit discusses Dr. Alan Donelson's testimony at length. Olson v. Ford Motor Co. appeal decision.
Aug 1, 2006 Devinder Grewal is appointed as Lecturer at UC Berkeley in the Department of Mechanical Engineering. He will be teaching ME176, Orthopaedic Biomechanics, this fall.
Jul 13, 2006 Principia is pleased to announce the addition of Alan Donelson to our staff.
Apr 4, 2006 Read Eric Rossetter's interview at Stanford's alumni profile.
Jan 28, 2006 Eric Rossetter passed his licensing examination and is now a registered Professional Engineer in the State of California.
Dec 1, 2005 Principia moves into its new laboratory facility in Livermore, California. This facility will serve as our laboratory and fabrication shop as well as provide a place for secure evidence storage.
Nov 30, 2005 Devinder Grewal testifies in the areas of biomechanics and ballistics at a local trial. Read the article in the San Jose Mercury News.
June 1, 2005 Principia moves into its new offices at 220 Sansome Street in San Francisco
April 17, 2005 Eric Rossetter and Devinder Grewal present two papers on Snowboarding at the 16th International Symposium on Ski Trauma and Skiing Safety in Niigata, Japan this week. The papers are entitled "Analytical Study of the Biomechanics of Lower Leg Injury in Snowboarding During a Forward Fall" and "Experimental Measurement of Selected Snowboard Mechanical Properties"
April 1, 2005 Devinder Grewal testifies in the area of automotive accident reconstruction, occupant kinematics, and supplemental restraint systems at a local trial. Read the brief article in the San Mateo Daily Journal.
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