(1) Elektromagnetische Schwingungen und Wellen (2) Theorie der Elektrisitat (3) Ueber den gegenwärtigen Stand der Frage nach einer mechanischen Erklärung der elektrischen Erscheinungen (4) Die Fortschritte der kinetischen Gastheorie (5) An Elementary Treatise on Theoretical Mechanics

Abstract

A COMPARISON of text-books of the last year or two with those published, say, a quarter of a century ago affords a clear and definite measure of the great changes which have occurred during the interval in our commonly accepted physical theories. All the books now before us reflect these changes in a greater or less degree, but we take Dr. von Geitler's manual as our first example because the author has closely followed the historic order of development in leading his readers from the simple early notions of action at a distance to the modern theories of electrical oscillations and their applications to wireless telegraphy.

(1) Elektromagnetische Schwingungen und Wellen.

By Dr. Josef Ritter von Geitler. Pp. viii + 154. (Brunswick: Fried. Vieweg und Sohn, 1905.) Price 4.50 marks.

(2) Theorie der Elektrizitat.

By Dr. A. Foppl Dr. M. Abraham. Vol. i. pp. xviii + 443; vol. ii., pp. x + 404. (Leipzig: B. G. Teubner, 1904 and 1905.)

(3) Ueber den gegenwärtigen Stand der Frage nach einer mechanischen Erklärung der elektrischen Erscheinungen.

By Dr. Hans Witte. Pp. xii + 232. (Berlin: E. Ebering, 1906.) Price 7.50 marks.

(4) Die Fortschritte der kinetischen Gastheorie.

By Dr. G. Jäger. Pp. ix + 119. (Brunswick: F. Vieweg und Sohn, 1906.) Price 3.50 marks.

(5) An Elementary Treatise on Theoretical Mechanics.

By J. H. Jeans Pp. viii + 364. (Boston and London: Ginn and Co., n.d.) Price 10s. 6d.