K-POP 歌词
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Floating Compass
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Pendulum
Lec 01: Periodic Oscillations, Physical Pendulum | 8.03 Waves and Vibrations (Walter Lewin)
STEAM Compass Art
magnetic needle
puzzle experiment 1 (electromagnet with compasses)
To plot the magnetic field of a bar magnet.
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Floating Compass
取回: Floating Compass
