By Wolfgang Rindler
Looking back, the 1st version of this publication now appears like an insignificant caricature for a booklet. the current model is, if now not the ultimate product, at the least a better approximation to it. The desk of contents may possibly exhibit little swap. yet that's just because the unique association of the fabric has been came across passable. additionally the fundamental function of the booklet continues to be an analogous, and that's to make relativity come alive conceptually. i've got regularly felt a lot sym pathy with Richard Courant's maxim (as mentioned and exemplified by way of Pascual Jordan) that, preferably, proofs could be reached via comprehension instead of computation. the place computations are valuable, i've got attempted to lead them to as obvious as attainable, in order to not prevent the growth of comprehension. one of the extra seen adjustments, this version incorporates a new part on Kruskal house, one other at the aircraft gravitational wave, and a 3rd on linearized basic relativity; it additionally comprises many new routines, and appendices: one directory the curvature parts for the diagonal metric (in a bit extra generality than the previous" Dingle formulation "), and one syn thesizing Maxwell's conception in tensor shape. however the most important adjustments and additions have happened in the course of the textual content. Many sections were thoroughly rewritten, many arguments tightened, many "asides" further, and, in fact, fresh advancements taken under consideration.