788 



Magnetism. 



"169 



60 069. 1 : 4. 



60 071. 1 = 5. 



60 073. 1 : 6. 



60 075. 1 : 8. 



60 074. 1 : 4. 



60.069. 12 Round Soft Iron Bars, 15 mm thick, Figure, two 150 mm and ten 20 mm long * d. 

 (M. P. 10 th edn., IV, 1, Figs. 4 and 5; 9 th edn., Ill, Figs. 6 and 7; Gan.-Man., Fig. 585;: 

 Gan.-Eein., Fig. 677) 0. :.". r> 



60.070. 12 Tempered Steel Wires, for magnetising and breaking up 0. L'. o 



60.071. Molecular Magnet Model, Figure, consisting of 24 small magnets, 20 mm long, 

 moving on points 1. 4. o 



l<U)72. --idem, for objective projection by means of the Horizontal Projection Apparatus 1. 1<>. 



The apparatus consists of a wood frame with a mica disc, the points carrying the magnets 

 being fixed to this frame. The phenomenon is in this manner rendered plainly visible. .. k 1 



60.073. Molecular Magnet Model, Figure, consisting of 16 small magnets, 20 mm long, 

 moving on points, each on separate base, on one baseboard 1. o. o 



60.074. Molecular Magnet Model, von Beetz's, Figure, consisting of 8 magnetic needles 

 tinning about the horizontal axis with red and white discs visible at a distance, for 

 experimentally proving Ampere's hypothesis 1.14.0 



60.075. Apparatus for determining the distribution of Magnetism in a bar magnet by measuring 

 its carrying power, Figure (W. and E. Phys. Prakt., Fig. 360), with 2 magnets, 



1 normal and 1 with consequent poles 2. 5. 



The carrying capacity is determined at the individual points of the bar magnet by the spring 

 tension (proportional to the extension of spring), which suffices to pull the small iron ball from the 

 magnetic body. 



i;o.o7(i. One Set Cardboard Sheets with magnetized sheet steel strips, F i g u r e, as suggested 

 by Friedr. ('. (',. Miiller (M. T., Fig. 148), for demonstrating the path of the lines of 

 force in simple and compound fields 0. 1*. 



60,077. Cardboard Sheet with magnetic bars placed perpendicularly to same, Figure, for 

 demonstrating the path of the lines of force of simple and compound fields in a plane 

 perpendicular to the longitudinal axis of the bar magnets, as suggested by Friedr. C. 

 G. Miiller (M. T., Fig. 14t) 0. 5. 



CI. 2025, S71, 

 5503. LML'-.I. 

 W88. 



