FTL drive leads to travel backward in time

There are three parts to this entry. Each assumes knowledge from the previous part.

A sketch proof that the speed of light is constant in all inertial frames of reference. PostScript (21 kB, 1 page) or LaTeX source (5 kB).

The Lorentz transformations derived from that fact. PostScript (24 kB, 2 pages) or LaTeX source (4 kB).

A scenario which leads to a time machine using an FTL drive. PostScript (25 kB, 2 pages) or LaTeX source (5 kB).


Wayne Throop, throop@aur.alcatel.com, has written a less mathematical explanation (10kB) which many people might find more accessible than my own.


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