Future arguments Introduction to Astronomy The Michelson-Morley Experiment Consequences of relativity: relativity and time travel, relativity in everyday life Measuring distances in astronomy and the Hubble law X-ray astrophysics Nuclear Energy Production Alternate energy sources (wind-mills, solar cells, etc.) Principles of general relativity Radiation processes Neutrinos Superconductivity Cosmology
Today’s seminar The failure of Classical Physics Classical mechanics and electromagnetism The Michelson-Morley experiment
Measuring the Refraction Index Light for M1 Light for M2 Screen
Measuring the Refraction Index Light for M1 Light for M2 Screen N· NmNm NaNa
Measuring the Refraction Index L = thickness n = index of refraction Number of wavelengths in the block (2 times): N m =2L/ n =2Ln/ Number of wavelengths in same distance without block: N a =2L/ =2L/ Phase change (in terms of wavelengths): N=N m N a =2Ln/ 2L/ 2L/ (n-1)
Measuring Distances Phase change: N =2Ln/ 2L/ 2L/ (n-1) The length of an object can be expressed in terms of the wavelength of light!!! For this experiment A. A. Michelson received the Nobel Price in 1907.