During the 19th century, light was considered to be a stream of particles called :
The corpuscular theory of light is proposed by newton in 1704. It is referred as particle theory or newton’s theory of light.
According to this theory,
a. Light is made up of tiny particles called corpuscles having negligible mass. These particles (corpuscles) are perfectly elastic.
b.These tiny particles always travel in straight line in all directions.
c. These corpuscles ravel at very high velocity.
These corpuscles are of different sizes. The different color of light is due to different sizes.