Chapter 8 Student)
Ch23
Electromagnetism chapter 21. Magnets Magnetic forces are known since 6th century B.C. Permanent magnets made from: Co, Ni,Fe each magnet has two poles:
Electromagnetism Zhu Jiongming Department of Physics Shanghai Teachers University.
Chapter 2 Electromagnetism. Chapter 2 Bellringers Friday 9/11/09 What do you know about magnets? North and south poles North and south poles attract Like.
