Sidelights on relativity. [Äther und Relativitäts-Theorie and Geometrie und Erfahrung. English] [Ether and the theory of relativity; Geometry and experience]

New York : Dover, 1983., 1983. Very Good. 56 p. : ill. ; 21 cm. ; ISBN: 048624511X (pbk.) :; 9780486245119 (pbk.) LCCN: 83-5275 ; LC: QC173.58; Dewey: 530.1/1 ; OCLC: 9394591 ; photogrpahic pictorial stiff paper wrappers ; "One reason why mathematics enjoys special esteem, above all other sciences, is that its laws are absolutely certain and indisputable, while those of all other sciences are to some extent debatable and in constant danger of being overthrown by newly discovered facts. In spite of this, the investigator in another department of science would not need to envy the mathematician if the laws of mathematics referred to objects of our mere imagination, and not to objects of reality. For it cannot occasion surprise that different persons should arrive at the same logical conclusions when they have already agreed upon the fundamental laws (axioms), as well as the methods by which other laws are to be deduced therefrom." ; slight smudge on edge of textblock, else VG