Does light travel in waves or particles?
Let’s say you have a maths question 1+1=2, you might put it to a calculator or you might give an example, each case works well for differnet age groups of people. Particle or wave forms of light are different models used to solve the physics in differnet situations. Usually, when concerned about the interfernece of light, at least before 3rd year university level, you can associated the wave concept with light, but the same results can be obtained with the particle theory, inwhich case all the path of the particles are summed up in a path integral formulation developed by richard feymann.
