The Quantum Harmonic Oscillator
Can we simultaneously measure position and energy of a quantum oscillator? Why? Why not?
Light and Spectroscopy Temperature measures atomic motion o High temperatures Atoms moving quickly o Low temperatures Atoms moving slowly o Absolute zero Atoms not moving at all Temperature scales o Fahrenheit Freezing 32 Boiling 212 o Celsius Freezing 0 Boiling 100 o Kelvin Sam size as Celsius degree but starts at absolute zero Temperature scale conversions o Tcelsius = 5/9 (Tfar. – 32) o Tkelvin = Tcelcius + 273 Is light a particle or a wave o Newton Particles like little bullets o 1800’s Many wavelike properties o Currently Both Light as a wave o The wavelength of light is about 5 * 10 meters o Blue = 400 nm o Red = 700 nm o The greek letter lambda is the symbol for wavelength Wavelength and frequency o Wave velocity = wavelength * frequency o C is the speed of light Frequency (f) o Number of oscillations per second o Measured in Hertz A hertz is an oscillation per second o Important equation for light C = wavelength * frequency The speed of light (c) o In a vacuum the speed of light is 186,000 miles per second The speed of light in air is very close to the speed of light in a vacuum o All wavelengths travel at the same sp