22-1 Physics I Class 22 The Magnetic Field
22-2 Magnetism in Ancient Times
22-3 Peter Peregrinus
22-4 William Gilbert
22-5 Some Old (and Debunked) Ideas Linger On
22-6 Magnetic Forces Between Poles “Opposites Attract”
22-7 Why Is A Magnet Attracted to Some Materials (Refrigerators)?
22-8 What Happens If You Try to Separate North and South Poles?
22-9 Magnetic Field Lines
22-10 Electromagnetism
22-11 Units of Magnetic Field
22-12 Class #22 Take-Away Concepts
22-13 Class #22 Problems of the Day
22-14 Class #22 Problems of the Day
22-15 Activity #22 Introduction to Magnetic Fields
22-16 Chinese Voyages of Exploration Admiral Zheng He ( )