SCIENTISTS (the EVERGLOWING STARS of the world )

 CHRISTIAN HUYGENS:                                    *INVENTOR OF PENDULUM CLOCK,             *DESIGNER OF IMPROVED TELESCOPES,  *DISCOVERER OF SATURN'S LARGEST MOON, TITAN,                                                                       *OBSERVER OF SATURN,                                   *DESCRIBED SATURN'S RINGS CORRECTLY,
*HIS GREATEST ACHIEVEMENT WAS WAVE THEORY OF LIGHT,                                            


*HIS PRINCIPLES ABOUT NEW WAVEFRONTS,                                                                    

*HE SHOWED THAT A PENDULUM THAT MOVES IN THE ARC OF A CIRCLE DOES NOT MOVE WITH AN EXACTLY EQUAL SWING, 

*HE CORRECTLY PREDICTED LIGHT TRAVELS SLOWER IN DENSER MEDIUM .  
*HE GAVE SIMPLE EXPLANATION FOR         

 THE LAWS OF REFLECTION, REFRACTION AND .ALSO FOR DOUBLE REFRACTION OF SOME MINERALS.