Summary:
- Lasers have numerous applications outside the physics lab.
- These devices can be employed to measure distances accurately.
- When the light beam strikes a solid object, it is reflected back and the device determines how far away the object is.
- The Heisenberg Uncertainty Principle states that it is impossible to determine simultaneously both the position and the velocity of a particle.
- Since photons and electrons have nearly the same energy, any attempt to locate an electron with a photon will knock the electron off course, resulting in uncertainty about where the electron is located.