REFLECTION FROM A MIKKOR. 229 



THE TI.ANE MIKKOR. 



example. The light radiates from this point, of conrse, in 

 all directions, though only the portion of it which ultimate- 

 ly reaches the eye of the observer is represented by lines 

 in the drawing. This portion diverges as it leaves the 

 point of the flame till it strikes the glass, which is seen 

 edgewise in the centre of the picture, and then, after reflec- 

 tion, continues to diverge just as before, on account of the 

 fact that the glass being plane, every ray is reflected in 

 the same manner, and the whole pencil or beam continues 

 its course, after reflection, without change, except in its 

 general direction ; and as the image in the eye of the ob- 

 server is determined by the character of the rays as they 

 enter his eye, the tip of the lamp flame will appear as if it 

 was situated as far behind the glass as it is in reality be- 

 fore it. 



It is, of course, the same with every other point, both in 

 the flame itself, and in all the parts of the candle and the 

 candlestick, although, to prevent confusion, those from only 

 one point arc represented in the engraving, and of those 

 issuing from that point, only that small portion are drawn 

 which ultimately reach the observer's eye. 



The engraving thus fails to represent the facts as they 



