Lenses!

Physics D, F and Honors Physics worked with the mathematics of thin lenses today. We reviewed the relevant formulas, which we had used in the last chapter for mirrors, and the sign conventions for lenses before folks were turned loose to work problems, draw ray diagrams and answer their questions independently. Tomorrow, we move onto refractive phenomena such as mirages, total internal reflection and dispersion.

Intro Physics reviewed their labs of wave properties, then took a moment to review reflection before moving on to diffraction, the ability of waves to spread around the edges of an object or through an opening in the object, like a door. We discussed examples of diffraction and touched on refraction before the bell. Tomorrow, we take on refraction and interference.