Physical Science 20 - April 25

Today in class we went over Homework 2.2.  Afterwards, we learned about another property of light called the rectilinear propagation of light - this means that light travels in straight lines.  We learned about the magnification equation as well how a pinhole camera works.  We took some notes and one example covered on slides 9-16 in the powerpoint.  Students then had the remainder of class to work on Homework 2.4.  I will check this on Wednesday.  Tomorrow is your exam on heat.  Make sure to study all heat assignments as well as notes on kinetic molecular theory.