Magnetism: Crash Course Physics #32

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This episode was sponsored by Prudential. Go to http://Raceforretirement.com and see how quickly 1% can add up.

You’re probably familiar with the basics of magnets already: They have a north pole and a south pole. Two of the same pole will repel each other, while opposites attract. Only certain materials, especially those that contain iron, can be magnets. And there’s a magnetic field around Earth, which is why you can use a compass to figure out which way is north. In this episode of Crash Course Physics, Shini takes us into the world of magnetism!

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41 Comments

  1. 1 – What was professor Oersted using in one of his lecture?
    2- What did he notice in one of the instruments he was using?
    3 – What conclusions did professor Oersted's discovery bring to, and when did that lecture take place?
    4 – How does magnetism help human being as far as Earth's magnetic field?
    5 – What are the basics of magnetism according to the video?
    6 – Why can only certail materials be magnets?
    7 -What are the similarities between electric field lines and magnetic field lines?
    8 – What is the key difference between them?
    9 – What does the reproduction of south and north pole in magnets divided in half?
    10 – What is the measure unit for magnetic fields? How many Newton per Ampere-meter does it correspond to?
    11 – What else did prof. Oersted discover during that lecture? How?
    12 – What was prof. Oersted's third discovery after a few more months?
    13 – a) How can the direction of electric current and that one of magnetic field be remembered? b) How many right-hand rules are there? c) What does the FIRST
    right-hand rule say? d) What is the consequence?
    14 – a) Why is the …….
    … right-hand rule useful? b) How can you figure the
    direction of the magnetic field out? c) What does the thumb direction show? c) How is the strength of the magnetic force represented? d) Explain the equation.

  2. This video was so well constructed, now I have to find all of your other videos because you've explained this so well. Time to learn! Thank you!

  3. Don't know about US prices but on Amazon in UK you can get magnets and iron filings for under £10, so if you're out of school 'cause of Covid, got a bit of pocket money and you like learning with practical experiments take a look

  4. Sorry if I have missed something here but at 6:01 can someone please explain why the magnetic field is not uniform and is elongated on the side of Earth that is facing away from our Sun?

  5. POV: you're watching this because of corona….

    your teacher sent this to you with worksheets

    you're procrastinating, instead of watching the video ,you're reading the comments

    the comments aren't funny

    you're bored now.

  6. I search magnetism, enter this video and the first thing that pops up is an advertisement about being magnetic to people.

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