Wednesday, March 23, 2011
Wednes-Day 1
Physics - we reviewed the wave diffraction and saw that the narrower the opening in an obstacle, the greater the degree of diffraction of the waves through that opening.
We then defined and looked at many examples of REfraction, the change in angle of a wave when it travels from one medium to another medium of different density.
We can measure the amount of refraction of one substance to another by measuring and comparing their respective absolute indices of refraction (found on the Reference Tables).
In general, light rays (which show the direction of travel of the wave) refract/bend TOWARDS the normal in a DENSER medium; by contrast, the rays refract/bend AWAY from the normal in a rarer/less dense medium.
Tomorrow, we will calculate the degree of refraction using the empirically discovered Snell's Law.
We then defined and looked at many examples of REfraction, the change in angle of a wave when it travels from one medium to another medium of different density.
We can measure the amount of refraction of one substance to another by measuring and comparing their respective absolute indices of refraction (found on the Reference Tables).
In general, light rays (which show the direction of travel of the wave) refract/bend TOWARDS the normal in a DENSER medium; by contrast, the rays refract/bend AWAY from the normal in a rarer/less dense medium.
Tomorrow, we will calculate the degree of refraction using the empirically discovered Snell's Law.
AP Chem - we finished examining the four types of titration curves and then walked through the quantitative calculation of FIVE major points of interest on the curves of WA/SB titrations;
initial pH (easy), halfway to the equivalence point (very easy, if you understand what is in solution), at the equivalence point (longest, and most challenging), a bit/splash past the equivalence point (easy, if you make one important and logical assumption), and the limiting pH (easy).# posted by C @ 8:36 AM 
