Speed of Light, The: A Limit On Principle?
A physicist's treatise on an old controversy in two parts: an "easy" part and a more scientific part.
homepage.sunrise.ch/homepage/schatzer/space-time.html
Evelio's Physics of Relativistic Travel
Presents a set of concepts which simplify calculations for acceleration and travel at relativistic speeds.
www.ultradrive.com/relativistic.htm