LIGHT CHANGES DIRECTION
WHEN THERE IS A CHANGE
OF MATERIAL
YOU CAN SEE LUMINOUS
OBJECTS AS THEY ARE A
SOURCE OF LIGHT
YOU CAN SEE
NON-LUMINOUS OBJECTS AS
THEY ARE REFLECTING LIGHT
FROM LUMINOUS OBJECTS
A SHADOW IS AN AREA WHERE LESS LIGHT IS
REACHED COMPARED TO AREAS WHERE LIGHT
CAN REACH WITHOUT BEING DISTURBED
SHADOWS IS FORMED WHEN LIGHT CANNOT PASS
THROUGH AN OBJECT AS IT IS OPAQUE AND LIGHT
TRAVELS IN STRAIGHT LINES
IT TAKES ROUGHLY 8 MINUTES FOR
LIGHT TO REACH FROM THE SUN
TO THE MOON
LIGHT TRAVELS FASTER THAN SOUND
THE LAW OF REFLECTION IS THE ANGLE OF INCIDENCE
= THE ANGLE OF REFLECTION
REFLECTION IS THE CHANGE IN
DIRECTION OF A LIGHTWAVE
ALL LIGHT WAVES APPLY TO THE LAW OF REFLECTION
CONCAVE MIRRORS ARE USED FOR FOCUSING LIGHT
CONVEX MIRRORS ARE USED FOR
SPREADING OUT LIGHT
TIR OCCURS WHEN A WAVE IS
REFLECTED FROM AN INSIDE ANGLE
THE ONLY TIME TIR OCCURS IS
WHEN THE CRITICAL ANGLE IS MET
WE CAN'T SEE IMAGES REFLECTED IN A SURFACE WHICH IS ROUGH BECAUSE
LIGHT GETS SCATTERED WHEN IT CAN'T TRAVEL IN STRAIGHT LINES AND THE
LIGHTWAVES WILL SHOOT RANDOMLY THEREFORE CANNOT PRODUCE A FULL
IMAGE
TRANSPARENT IS A MATERIAL THAT ALLOWS LIGHT
TO TRAVEL THROUGH IN STRAIGHT LINES
FORMING A CLEAR IMAGES
TRANSLUCENT IS A MATERIAL THAT WILL LET SOME LIGHT THROUGH HOWEVER
SLIGHTLY ROUGH SO LIGHT SCATTERS AS IT ENTERS SO IT DOESN'T SHOW A CLEAR
IMAGE
OPAQUE IS A MATERIAL WHERE NO LIGHT CAN PASS THROUGH
THE LAW OF REFRACTION IS THAT THE ANGLE OF INCIDENCE > ANGLE OF
REFRACTION
REFRACTIVE INDEX REFERS TO HOW MUCH LIGHT IS
REFRACTED WHEN PASSING THROUGH A RANGE OF
MATERIALS.
REFRACTION IS WHEN AN OBJECT BENDS A RAY OF
LIGHT BY CHANGING SPEED AND DIRECTION