Discovery of electromagnetism (K-A)

• Discovery of electromagnetism-video (K-A)
• Experiment: What's the shape of a magnetic field? (K-A)
• Electromagnetic field (above vs. below) (K-A)
• Electromagnetic field (forward vs. reverse) (K-A)
• Electromagnetic field (loop) (K-A)
• Battery meter (galvanometer) (K-A)