396 



RAINBOW. 



Here the ray S A strikes the drop at A, is refracted 

 or bent to B, is then reflected to C, where it is 

 refracted again, and reaches the eye of the spectator. 



Here the ray SB strikes the drop at B, is refracted 

 to A, is then reflected to C, is again reflected to D, 

 when it is again refracted or bent till it reaches the eye 

 of the spectator. 



Q. Why are the COLOURS of the SECOND bow 



all REVERSED ? 



A. Because in one bow we see the 



