Official course description: First part of a demanding two-semester sequence for students with the strongest background, interests, and abilities in science and mathematics. The topics covered in PHY 141 are similar to those in PHY 131 but are treated in more depth in a small-class setting. Students may transfer to PHY 131 at any time during the first half of each semester without penalty. Three lecture hours and one recitation hour per week. PHY 141 may not be taken for credit in addition to PHY 121/123, PHY 125, or PHY 131.