(1) Practical Physics for Inter BSc Students (2) A Textbook of Light (3) Light (4) A Textbook of Light (5) Elementary Physics: (6) College Physics

Abstract

IN 1934 a committee of the Physical Society published a valuable report on the teaching of geometrical optics. The committee made a unanimous recommendation with regard to the convention to be observed for the sign of the power of an optical system. This convention is universal among opticians, and may be expressed briefly by saying that a positive lens tends to converge and a negative lens to diverge the light. A more difficult problem to solve is that of obtaining agreement as to the sign conventions to be adopted when discussing the relations between object and image. Two alternative methods were advocated, which may be called the Cartesian and the non-Cartesian systems.

(1) Practical Physics for Inter. B.Sc. Students

By Dr. H. M. Browning L. Starbuck. Pp. x+146. (London, Glasgow and Bombay: Blackie and Son, Ltd., 1936.) 3s. 6d. net.

(2) A Textbook of Light

By L. R. Middleton. Second edition. Pp. viii + 288. (London: G. Bell and Sons, Ltd., 1937.) 6s.

(3) Light

By Vivian T. Saunders. Third edition. Pp. vii+328. (London: John Murray, 1937.) 6s.

(4) A Textbook of Light

By G. R. Noakes. Pp. viii+355. (London: Macmillan and Co., Ltd., 1937.) 6s.

(5) Elementary Physics:

for Medical, First Year University Science Students and General Use in Schools. By G. Stead. Fifth edition. Pp. xv+559. (London: J. and A. Churchill, Ltd., 1936.) 12s. 6d.

(6) College Physics

By Prof. John A. Eldridge. Pp. x+616. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1937.) 18s. 6d. net.