Common Science 



FIG. 66. The pencil is not bent, but the light that comes from it is. 



The reason the pencil looks bent is because the light 

 from the part of it under the water is bent when it 

 passes from the water into the air on its way to your 

 eye; so the slant at which it comes to your eye is 

 the same slant at which it ordinarily would come from 

 a bent pencil. 



Experiment 46. Fill a glass with water. Put the pencil 

 into it in the same way you put it in the cup in the previous 

 experiment, letting the pencil slant from left to right. Lower 

 your head this time until it is on a level with the water in the 

 glass, and look through the glass and water at the pencil. 

 Notice what happens where the pencil goes into the water. 



What you see is explained in the same way as are the 

 things that took place in the other experiments in re- 

 fraction, or bending of light. The light from the part 



