Joe Cossette on Twitter: "Visualizing magnetic fields with some strong magnets and an old TV monitor. Pro Tip: Make sure it's a monitor you don't plan on using anymore. 😎 #iteachphysics https://t.co/rhlbWYlY4Q" /
![Amazon.com: SALEX Laptop Phone Holder. Black Magnetic Smartphone Adjustable Notebook Bracket with Side Mount Clip. Slim Foldable Computer Monitor Desktop Stand. Magnet Universal Screen Expansion for Office Work. : Electronics Amazon.com: SALEX Laptop Phone Holder. Black Magnetic Smartphone Adjustable Notebook Bracket with Side Mount Clip. Slim Foldable Computer Monitor Desktop Stand. Magnet Universal Screen Expansion for Office Work. : Electronics](https://m.media-amazon.com/images/I/51c3pMcxZ2L.jpg)
Amazon.com: SALEX Laptop Phone Holder. Black Magnetic Smartphone Adjustable Notebook Bracket with Side Mount Clip. Slim Foldable Computer Monitor Desktop Stand. Magnet Universal Screen Expansion for Office Work. : Electronics
![Amazon.com: Apulat Strong Neodymium Magnet; Used to Attach a Phone, a Tablet or a Second Screen to Your Laptop or Computer Monitor; Use The iPad as an Additional Display for Your MacBook; Amazon.com: Apulat Strong Neodymium Magnet; Used to Attach a Phone, a Tablet or a Second Screen to Your Laptop or Computer Monitor; Use The iPad as an Additional Display for Your MacBook;](https://m.media-amazon.com/images/I/71AFGlo3mCS.jpg)