248 



LIGHT 



FIG. 118. A poorly arranged light in a dining room. 



Lamps, gas jets, electric lights, should be placed in such a 

 way that their rays are thrown upon tables, chairs, and books, 

 and not into the eye. If a person faces a strong light when he 



reads, his pupils con- 

 tract and do not ad- 

 mit enough light from 

 the book to make it 

 clear and distinct (Fig. 

 1 19 Z>). If a person sits 

 so that the light falls 

 FIG. 1 19. The pupil of the eye adjusts itself to on the book and not in 

 the intensity of the light. i . | 



his eyes, he sees the book 



clearly because his pupils^xpand and allow abundant light from 

 the book to enter his eyes (Fig. 1190). 



The light from lamp, gas burner, or electric bulb should be 

 scattered by globes and shades. Light that is scattered by 

 shades and globes falls on more objects than unscattered light, 



