He first explained light as a stream of high-speed particles, making the phenomenon of straight-line propagation reasonable.
Then he proposed a hypothesis:
The particles that make up light enter a special temporary state when passing through an interface.
In the process of transmission, they periodically recover, and when recovering, it becomes easier to pass through the next interface. However, between two recoveries, it becomes easier to reflect...
Quite mysterious, isn't it?
The particles periodically recover, pass through when recovering, and reflect when not recovering...
This indeed can explain the phenomenon of Newton's Rings, but this explanation makes particles sound too much like waves.
According to the wave theory.
This periodicity is the wavelength, same-phase interference makes it easy to pass, and out-of-phase interference makes it easy to reflect...
So whether it's Newton Rings or the phenomenon of dispersion.
