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起始时间 00:32Using Iron Filings

Magnetic field using horseshoe magnet, keeper and iron filings

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起始时间 02:00Iron Fillings and Their Uses

Magnetic Fields Described and shown with Iron Fillings

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起始时间 00:07Introduction to Magnets

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起始时间 00:26Observing the Magnetic Field of a Magnet Using Iron Filings

Magnetic Fields – Observing Magnetic Force

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起始时间 00:41Testing the Magnetic Field Strength with an Iron Core

Enhance the strength of an electromagnet with an iron core

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起始时间 0:00Introduction to Magnetosphere

Why Earth's magnetic shield is so important | The Magnetosphere

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起始时间 00:50Diagram of a Sphere, Needle, and Wafer

Problem 6.13-Auxiliary Field H, Ampère’s Law - Magnetized Materials: …

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起始时间 0:00Introduction to Magnetic Field Lines

Magnetic Field Around Stack of Magnets With Iron Filings

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