tag="{http://www.w3.org/1999/xhtml}a">8.
Stencil Card for Complementary Colours |
77 |
| 9. |
Another form |
79 |
| 10. |
Slide for Mixing any two Spectral Colours |
80 |
| 11. |
Refraction of Monochromatic Light by Lens |
87 |
| 12. |
Refraction of Dichromatic Light |
89 |
| 13. |
Narrow Spectrum as seen from a Distance |
97 |
| 14. |
Spectrum formed with V-shaped Slit |
103 |
| 15. |
Bezold’s Device for Demonstrating Non-achromatism of the Eye |
108 |
| 16. |
Crossed Lines showing the Effect of Astigmatism |
113 |
| 17. |
Another Design showing the same |
114 |
| 18. |
Star-like Images of Luminous Points |
116 |
| 19. |
Sutures of the Crystalline Lens |
117 |
| 20. |
Multiple Images of a Luminous Point |
120 |
| 21. |
The same, showing an increased number of Images |
122 |
| 22. |
The same when a Slit is held before the Eye |
123 |
| 23. |
Multiple Images of an Electric Lamp Filament |
125 |
| 24. |
The same seen through a Slit |
126-128 |
| 25. |
Illusion of Length |
132 |
| 26. |
Another form |
135 |
| 27. |
Another form |
136 |
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