One leg of a Michelson interferometer contains an evacuated cylinder of length L, having glass plates on each end. A gas is slowly leaked into the cylinder until a pressure of 1 atm is reached. If N bright fringes pass on the screen during this process when light of wavelength l is used, what is the index of refraction of the gas? Hint: The fringe shifts occur because the wavelength of the light changes inside the gas-filled tube.
Tuesday, September 27, 2016 7 Ideas 1. No Force Law a. an object at rest will stay at rest; b. an object in motion will stay in motion (in a straight line). 2. Net Force Law (Most Famous) - A net force will cause an object to accelerate a. the greater the forece, the greater the acceleration; b. the greater the mass, the less the acceleration 3. For Every ACTION, There is an Opposite and Equal REACTION ________________________________________ Unites of Force ( Weight ) English Force Required to accelerate 1 slug mass 1ft/sec^2 Pound (lb) Metric Force required to accelerate a 1 kilogram mass 1m/sec^2 Newton (N)