THIS BOOK DEALS WITH NATURE OIF LIGHT AND ITS PROPERTIES. BY GOING THROUGH THIS BOOK INDIVIDUAL CAN SUCCESSFULLY EXPLAIN THE DIFFERENCE BETWEEN LENSES AND MIRROR, REFLECTION AND RERACTION. IN UNIT OF SOUND INDIVIDUAL IS CAPABLE TO HAVE KEEN KNOWLEDGE OF REVERBERATION, ECHO, ULTRASONIC SOUNDS. BY FOCUSSING LIGHT ON ENERGY, THIS BOOK DEALS WITH RENEWABLE AND NON-RENEWABLE SOURCES OF ENERGY. THIS BOOK ALSO REFLECTS KNOWLEDGE ON STARS AND STELLAR ENERGY. LAST BUT NOT LEAST THIS BOOK ENABLE INDIVAL, STUDENT, RESEARCHER ABOUT BASICS OF ATOM AND ITS PROPERTIES AND DUAL MATTER OF RADIATION.