Dear Student in PHY 215B, Our first quiz is tomorrow, Friday. Anytime between 8 AM and 10 PM you can click on the "Quiz #1" folder inside LON-CAPA, and then on one of the questions, and then on the "Show resource" button. Once you start taking the quiz, a timer will count down from 30 minutes to zero. You will not need the full 30 minutes, you will be done in 5 or 10 minutes. A quiz typically will have 2 or 3 simple questions on the current week's material. Quiz #1 will cover the same material as Homework Set #1: the first half of Special Relativity: Chapter 2, Sections 1 through 9. For the quiz you will need a pen or a pencil, your favorite calculator, scrap paper. You can use your notes and the text book. The questions will be in "exam mode" instead of "homework mode". You will have multiple choices and twelve tries for each question. LON-CAPA will not give you immediate "Correct" or "Incorrect" feedback in green or red color, it will just say "Answer submitted ..." in yellow. You can change your mind eleven times if you think you picked an incorrect answer. All your submissions are recorded, but only the very last submission will be graded for each question. You are allowed to move back and forth between the questions during the quiz. Thank you and good luck! Tibor Nagy