Sidelights on Relativity Book

An exceptional historic document composed of two distinct addresses by Albert Einstein.

Firstly, recounting the stumbling of Physical Science from Newton's theory to his own: the intrinsic relation of matter and energy; and how the influence of problems derived from Hertz's investigations in electro-dynamics made this possible, thanks to Lorentz through Maxwell's equations. Secondly, the fundamental question for the character of Mathematics as a valid description of reality -particularly in the field of Geometry. Plus a beautiful explanation of what an infinite universe, that is, an unbounded sphere, means.

Perhaps equally important, there remains the question of how physics experiments are tainted by wrong philosophical approaches -now, at a time in which Philosophy is unconsidered or relegated to the dark places of Theology.

Accessible to anyone (as for the large part of Einstein's public work) this is a beautiful document and a personal recommendation for lunch time!