The HIDDEN Magnets in Your Phone ft. MKBHD | Summary and Q&A

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April 9, 2019
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Physics Girl
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The HIDDEN Magnets in Your Phone ft. MKBHD

TL;DR

MKBHD and Physics Girl use magnet paper to uncover the hidden magnets in everyday devices, demonstrating how magnetic fields work.

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Key Insights

  • 🏑 Magnet paper is a tool that can show the magnetic fields of objects.
  • 🏑 The arrangement of magnets in devices is carefully designed to create specific magnetic fields.
  • 🧲 Heating a magnet can demagnetize it, while strong magnets can permanently affect the magnetic field of weaker magnets.

Transcript

  • [Diana] Thanks to Curiosity Stream for supporting PBS Digital Studios. Guess what kind of magnet this is? - Wow, and why on Earth would a magnet look like that? - I thought you'd never ask! How do you do your intros? What's up, MKBHD? - What's up, guys? MKBHD here. - You say what's up guys? - Welcome to...
  • What about the girls? - What's up, eve... Read More

Questions & Answers

Q: How does magnet paper work?

Magnet paper is made of an oily substance with tiny pieces of nickel flakes sandwiched between two pieces of plastic. When exposed to a magnetic field, the nickel flakes align with the field lines, creating patterns on the paper.

Q: How do magnets in devices like smartphones work?

Magnets in devices like smartphones are arranged in specific patterns to create magnetic fields that serve various purposes, such as attaching accessories or operating haptic engines for vibrations.

Q: Can magnets be demagnetized?

Magnets can be demagnetized if they are heated up. However, strong magnets can permanently affect the magnetic field of weaker magnets, causing them to stay warped.

Q: How do refrigerator magnets work?

Refrigerator magnets, such as the halback array shown in the video, have magnetic fields designed so that they can be felt on one side but not on the other. They achieve this by using a mix of rubber and iron in their composition.

Summary & Key Takeaways

  • MKBHD and Physics Girl use magnet paper to reveal the magnets in devices like iPads and smartphones.

  • Magnet paper is made of an oily substance with metal flakes that line up with magnetic field lines.

  • The magnets in devices are arranged in different patterns to create specific magnetic fields.

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