Optics

 

VIEW POINT CATERHAM

 

Seeing is Believing or Believing is Seeing ?

Out of Sight, Out of Mind or Out of Mind, Out of Sight ?

 

 

 

 

 

 

From Etymology Online.com :

PERSPECTIVE :

Late 14c., perspectif, “the science of optics,” from Old French perspective and directly from Medieval Latin perspectiva ars “science of optics,” from fem. of perspectivus “of sight, optical” from Latin perspectus “clearly perceived,” past participle of perspicere “inspect, look through, look closely at,” from per “through” (from PIE root *per- (1) “forward,” hence “through”) + specere “look at” (from PIE root *spek- “to observe”). The English word is also attested from early 15c. as an adjective, “pertaining to the science of optics.”

In optics, a caustic is the envelope of light rays which have been reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface.

 

 

Which Way Is Up ?

 

 

Wood Dragons Everywhere.