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Using Quaternions for EM and GEM, Manifestly Covariant Form

1,207 views · Published 13 April 2008 · 14:54 · Indexed 18 October 2026

Channel: Doug Sweetser · 2008 · Science & Technology

Please see the "GEM Blog: GEM Unification Rescinded, Officially" video.

This talk shows how to derive the Maxwell equations starting from quaternions, a type of 4D number. A variation of the EM Lagrangian leads to the GEM field equations. A time dependent form of Newton's field equations can be seen in the GEM field equations, a good thing.

NOTE: this is _exactly_ the same talk as one with a similar title, except I changed the notation from the Cartesian t, x, y, z to far more general 0-3 subscripts.

Using Quaternions for EM and GEM, Manifestly Covariant Form

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