DYNAMICS - P HOTO-ELECTRICITY 



Dynamics. By Horace Lamb^ Sc.D., LL.D., F.R.S. Formerly Fellow of 

 Trinity College, Cambridge. Professor of Mathematics in the Victoria 

 University of Manchester. 



Demy 8vo. pp. xii+344. Price loi. (sd. net 



In dealing with his subject the author, avoiding the abstract treatment, 

 which he regards as " likely to bewilder rather than to assist the student," 

 has preferred to follow the method adopted by Maxwell in his Matter and 

 Motion. Some account of the more abstract, if more logical, way of 

 looking at dynamical questions is given at the end of the book. The 

 author has been at pains to collect useful examples for practice, preference 

 having been given to those which are simple rather than elaborate from 

 the analytical point of view. 



Contents, — I. Kinematics of Rectilinear Motion. II. Dynamics of Rectilinear 

 Motion. III. Two-Dimensional Kinematics. IV. Dynamics of a Particle in Two 

 Dimensions. Cartesian Co-ordinates. V. Tangential and Normal Accelerations. 

 Constrained Motion. VI. Motion of a Pair of Particles. VII. Dynamics of a System 

 of Particles. VIII. Dynamics of Rigid Bodies. Rotation about a Fixed Axis. 

 IX. Do. Motion in Two Dimensions. X. Law of Gravitation. XI. Central Forces. 

 XII. Dissipative Forces. XIII. Systems of Two Degrees of Freedom. Appendix. 

 Note on Dynamical Principles. Index. 



"Professor Lamb has now fulfilled the promise made about a year ago to issue the 

 companion volume to his 'Statics,' and the two treatises together will carry a student as 



far as he needs to go for all except special purposes A special feature of the book is 



the avoidance of what the author rightly calls 'algebraical and trigonometrical puzzles 

 in disguise,' which are so often found among the examples for exercise. Here we find 

 questions of theoretical and practical interest, such as lead to a result worth the trouble 

 of solving, and not to a mere barren coincidence." — The Manchester Courier 



Photo-Electriciiy. By Arthur Llewelyn Hughes, D.Sc, B.A., Assistant 

 Professor oj Physics in the Rice Institute, Houston, Texas. 



Demy Svo. pp. viii+144. With 40 text-figures. Price 6s. net 



Since the account of the photo-electric effect given by R. Ladenburg 

 in the yahrbuch fiir Radioaktivitcit for 1 909, no complete resume of the 

 subject has been written. During the past five years, however, consider- 

 able progress has been made, and it is therefore thought desirable to give 

 some account of the condition of the subject at the present time. Such an 

 account is attempted in this book, all forms of ionisation by light being 

 considered, whether in solids, liquids or gases. — Extract from the Preface 



"This volume belongs to the CambriJge Physical Series, and to say that is enough to 

 commend it to all who need lucid and exact information on the subject which it dis- 

 cusses. ...A clear and admirable summary ot the work done up to date." — The Spectator 



