478 



Reflection of Light. 



No. 53779 



53779. 1:8. 



53 795. 1 : 6. 



53,779. Spherical Concave Mirror, of glass, with small box, bouquet and vase, for producing 

 real images, Figure 



In a black box is arranged, inverted, a bouquet, which has to be strongly illuminated. By 

 means of a concave mirror an upright, real image is produced of this bouquet, this image appearing 

 to issue from the glass when the correct position is given to the rotary mirror and on glancing, a 

 suitable distance off, at the glass and the mirror. 



Spherical Concave Mirrors, of Glass, ground, fixed on Stand, silvered on the back, focal 

 length 600 mm. 



List No. 53,789 53,790 53,791 53,792 

 Diameter mm 200 300 400 500 



Each 3. 0. 4. 0. 6. 0. 9. 0. 



Style: as Nos. 53,780/84. 



53,794. Spherical Mirror (M. T., p. 177), 100 mm diameter, on stand 



53.795. Japanese Mirror (Magic Mirror), Figure, of metal, with force-pump 



The images can be rendered visible both by sunlight and with the projection lantern. 



53.796. Glow Lamp Ring after Grimsehl, for concave minor experiments (Fr. phys. Tcehn. 

 II, 2, Fig. 2648), stand with 16 7-volt electric glow lamps in scries 



53.797. Black Mirror, for drawing, in case, 11 cm long, 8 cm wide 



53.798. - - idem, 16 cm long, 13 cm wide 



53.799. Plane Mirror, of silvered glass, in frame 



t: s. d. 

 4. 10. 



0. 10. 



5. Hi. (i 



2. 1.0 

 (I. 10.0 

 0. 18. 

 0. 4.0 



Mirrors of perfectly plane parallel glass, coaled with silvei. for instruments read by a mirror. 



List No. 53800 53,801 53,802 



Thickness mm 0.51 0.51 0.51 



Diameter mm 510 1115 1620 



Kaeh t 0. 4. 0. 7. 0. 10. 



Concave Mirrors for instruments with mirror-reading, silvered on back; focal length 100 cm. 



List No. 53,803 53,804 53,805 



Diameter mm 10 !."> 2(1 



Each 0. 6. 0. 9. 0. 12. 



C.'l. 1237, 123'J. 



