Physics 122 Acceleration of Multiple Masses. Midterm has been moved to Wednesday, March 23. Physics 112 Diffraction (diffraction_notes.pdf - only the first two pages) and Refraction (refraction_notes.pdf) Index of Refraction.  #12 - 20 of worksheet (refraction_handout.pdf) Midterm is set for Monday, March 28. Astronomy 120 Mercury and Venus Pg 210 #9, 12, 27, 30, 32 are to be handed in on Monday, March 21. Draft of project is due Monday, March 21. Math 9 Equations and word problems. HW Pg 282 #18, 23