lecture goals

• Learn another example of a phenomenon explainable only if light has energy E=hf.
• Learn the details of the photoelectric effect: light in, electricity (electrons) out.
• Learn the energy diagram which shows Einstein's explanation of the photoelectric effect pictorially.
• Learn a dab about Millikan, who measured h and e.
• Learn the 5 fundamental constants G, c, e, h, k.
• Start to understand the one big concept of Unit 3, quantization.