SUN AND MOON. 



149 



Q. Why does the SUN seem LARGEE when lie 

 SETS and RISES, than he does at noon ? 



A. Because the rays pass through 

 more of the vapoury atmosphere which 

 surrounds the earth; and this vapoury 

 atmosphere acts like a magnifying glass. 



It is very manifest that the lines D C are shorter than 

 the lines EC: if, therefore, A be the earth, and D G E the 

 boundary of the atmosphere round the earth, then the rays 

 M E C (at the horizon} will pass through more of tlte 

 atmosphere, than the rays S D C, which are more elevated. 



Q. Why does the MOON appear LARGER at her 

 RISING and SETTING, than when above our heads ? 



A. Because the rays pass through more 

 of the vapoury atmosphere which surrounds 



