Thursday, March 24, 2011
Thurs-Day 2
Physics - we looked at refraction quantitatively, using Snell's Law to determine the angle of refraction in a different medium, given an angle of incidence and the indices of refraction of the two media that a wave travels through.
We then saw that, when the refraction angle is 90 degrees from the normal, there is total internal reflection i.e. the ray does not refract into the second less dense medium! The angle at which this phenomenon occurs is called the critical angle.
Tomorrow, we will see the optical illusions that result from refraction of light rays.
We then saw that, when the refraction angle is 90 degrees from the normal, there is total internal reflection i.e. the ray does not refract into the second less dense medium! The angle at which this phenomenon occurs is called the critical angle.
Tomorrow, we will see the optical illusions that result from refraction of light rays.
AP Chem - we finished a specific weak acid, strong base titration problem in which we discussed the processes occurring at each of the major points of change.
We then discussed acid-base indicators, which are weak acids themselves, and how they can be used to show a color change at the equivalence point of a given titration.
We introduced the titration of a polyprotic acid, and noted the major species in solution at each point, as well as the method for determining the successive Ka's of the conjugates that form.
Problem sets and tutorials are posted on Blackboard.
Problem sets and tutorials are posted on Blackboard.
# posted by C @ 9:16 AM 
