BENDING OF THE STRAW WHEN PLACED IN A GLASS OF WATER

THIS VIDEO SHOWS THE BENDING OF LIGHT WHEN A STRAW IS PUT
IN A GLASS OF WATER. THIS IS BECAUSE THE SPEED OF LIGHT IN WATER DECREASES
AS THE MEDIUM i.e. WATER IS OPTICALLY DENSER THAN AIR.[NOTE: IT DOESNOT MEAN THE DENSITY KEEP IN MIND D= M/V, OPTICALLY DENSER MEANS
---EXAMPLE OIL IS OPTICALLY DENSER THAN WATER BUT OILS DENSITY IS LESS
THAN THAT OF WATER]