I filmed the lesson - so you can learn it, and then teach it to the class.
Start off with this quandary - it is a review of the photo-electric effect.
This is what the first question is for the IB Mock test that follows this unit.
While they are working on the quandary, you can stamp homework, they can put problems on the
whiteboard, and you can explain the homework if they need help.
02-00PhotoElectricQuandary.ppt
Here is the main lesson. Study sections 27-6 and 27-7 in your book. (Starting on page 836) Look over the PowerPoint. Also look in your data packet. Notice that the formulas in the book are slightly different from the data packet. The PowerPoint follows the data packet. It is pretty basic math, but the physics bends your mind. Basically, de Broglie proposes that if light can be both particle and wave, then matter can be as well. Although you can calculate the de Broglie wavelength of large objects like cars, it really only has meaning for small objects like electrons and protons.
There is a noteguide that goes with this day. Be sure to hand it out at the beginning of the class. There are a couple of examples that appear on the PowerPoint that you should work through on the whiteboard, and have them put in their noteguide. I will refer to these examples as being things that are on the test.
•Momentum of Photons
•de Broglie wavelengths and electron microscopes
•Electron Diffraction