Chapter 27 Quantum physicsNotes in addition to powerpoint from class.27.1 Quantization: Planck’s Hypothesis- A blackbody doesn’t have to be black our sun is a black body- Energy is the area under the curve, Intensity*wavelength- At a higher temp, more energy, increased intensity, and wavelength shifts to UV- As the temperature goes up, the wavelength as to decrease in size- The energy in nature is discrete, not continuous- The packet of energy is known as a photon27.2 Quanta of Light: Photons and the Photoelectric Effect- Red light on photoelectric material- nothing happened, went to a more energetic wavelength like blue and light happened- Intensity means more of something in a given region- A single photon as to have just enough energy to release the electron- If the energy exceeds the energy to free the electron, the rest becomes kinetic energy energy of motion- At higher frequencies, light acts more like a particle (gamma rays), but at lower frequencies (radio) acts more like a
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