认识磁力 Discovery Understanding: Magnetism
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认识磁力影片简介
Without magnetism, we would not have music as we know and experience it today; we would not have computers, motor vehicles, compasses, or MRI scans. Magnetism literally shapes our modern-day world. Learn how magnetic f...展开orces were first discovered and how magnetism affects both humans and other animals. Explore the role of magnetism in computers, audio recording, medicine, travel and its importance in your daily life.
