Single and Double Pendulums, Vibrations. 



297 



4:5 



5:6 



6:7 



52 124 B. 



52 126. 1 : 12. 



52127. 1:13. 



52,117. Pendulum Apparatus (Mach's), Figure, with adjustable pendulum plane and 

 graduated arc (M. P. I, Fig. 150 [157]; Fr. phys. Techn. I, 2, Fig, 3343 [I, Fig. 479]) 



."2,118. Cross Pendulum (Oberbeck's), Figure, for demonstrating the laws of the physical 

 pendulum (Ztschr. f. d. phys. u. chem. U., 1, 1887/88, p. 253 ; Fr. phys. Techn. I, 2, Fig. 3355 

 [I, Fig. 480]) 



52.119. - - i d c in, without stand, for use with the Mach pendulum apparatus stand No. 52,117 



52.120. Spring Pendulum (Prof. Eug. Meyer's), Figure, for demonstrating the individual 

 periodicity of a system, the periodicity of a periodic force, the forced oscillations, the 

 static deflection, resonance and the critical periodicity of a force (Z. d. V. d. I, 53, 1909, 

 pp. 1301 et seq., No. 18, and text-sheet 16, Fig. 49) 



52.121. Model for Ship Oscillations, as suggested by Schlick (Z. d. V. d. I., 53, 1909, p. 1301 

 et seq., No. 20, and text-sheet 16, Fig. 51) 



.">-', 12.3. Galilean Escapement Pendulum, Figure: see also No. 51,811, p. 258 



52,1.24. Double Pendulum (Airy's), Figs. A and B (Fr. phys. Techn. I, 2, Fig. 3389 [I, 

 Fig. 493]), for demonstrating Lissajous' curves by means of blue sand 



.">2.125. -- idem, without stand, for drawing the curve by ink (M. T., Fig. 50) . . . . 



52.126. Double Pendulum (Oberbeck's), Figure, for demonstrating co-oscillation (Fr. 

 phys. Techn. I, 2, Fig. 3398 [I, Fig. 496]; Ztschr. f. d. phys. u. chem. U., 1,1887/88, 

 p. '254) 



52. 127. Double Pendulum (Lorenz'), Figure, for studying combined oscillations on the 

 flat, specially suitable for the oscillations of bells and clappers 



s. d. 

 1.10.0 



1. 4.0 



0. 16.0 



2. 5.0 



Price 

 on appli- 

 cation 



0.14.0 



1. 0.0 

 0.12.0 



1. 0.0 

 6. 0.0 



Cl. 627, 6iC, Mi:.. 



