How to Measure a Particle on a Screen

On slide 24 you can see the first diagram on the left shows a pure wave like light. In the middle it's golf balls, to the right is electrons, which combines the characteristics of the first and the second. Let's see if we can keep out some adding the electron. And then when we measure it again on our screen it's again a particle. This is what physicists do. They try and run it every way they possibly can to see if they can get right to the bottom of what these things are.