412 



Wave Motions. 



No. 53 I Hi 



53146. 1:10. 



53 148. ] : 14 



f>3,146. Wave Machine after Much. F i g u re, for demonstrating progressive and stationary 

 Longitudinal and Transverse Waves, also for converting transverse waves into longi- 

 tudinal and vice versa ............................. .">. 



The Machine is provided with a driving arrangement l>y moans of which the different waves can 

 ih be ]>ro<luccd. A precise description is appended to each machine. 



r>.;.l47. Longitudinal and Transverse Wave Apparatus after van s< -haik (/tschr. f. d. phys. 

 11. cliein. 1 T . 14, l!Mll. |i. X9; M. T. p. S(i), showing the longitudinal and transverse 

 oscillations simultaneously ........................... X. (i. o 



r>.'{.lix. Wave Machine, Model for Hertzian Waves, alter Silvauus Thompson, Figure 

 (S. P. Thompson-Lummer. Sichthares mid unsichtharcs Ijicht, 1X!)X, Fig. 1 .-<); Slaliy. 

 Die Fnnkenteleg7'a])hie, \>. 11, 19(11) ................. ..... . (i. 0. (> 



The radiator (primnrv station) forms a heavy mass of brass, suspended from fibres, and ha> a 

 difinite period of oscillation, which is relatix'ely hi rye. The resomitor (secondary station) is a circle cut 

 out of brass, this al>o beinj; suspended from fibres. 





