In other words, light has the following property called wave particle duality. And what this property shows or tells us is that whenever it's convenient, light can act as a wave. And whenever it's convenient, light will act as a particle. Now, following this experiment, another experiment was conducted known as the BROGLEY Experiment. And what that experiment showed was that not only light has its property but other subatomic particles, like electrons also have this duality property or the wave particle duality property. Now, these two experiments led directly to the following result the Uncertainty Principle, or the Heisenberg Uncertainty Principle, named after the guy who came up with the principle, Heisenberg.