{"id":58189,"date":"2026-01-02T05:23:59","date_gmt":"2026-01-01T20:23:59","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=58189"},"modified":"2026-01-02T05:23:59","modified_gmt":"2026-01-01T20:23:59","slug":"the-shock-of-a-simple-i-that-changed-the-world-the-hidden-story-of-electrons-and-magnets-inside-crt-tvs","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=58189&lang=en","title":{"rendered":"The Shock of a Simple \u201cI\u201d That Changed the World! The Hidden Story of Electrons and Magnets Inside CRT TVs"},"content":{"rendered":"

I’m Ken Kuwako, your science trainer. Every day is an experiment.<\/strong><\/p>\n

“TVs are so thin these days, but have you ever wondered why the old ones were so bulky and heavy?”<\/p>\n

That chunky CRT (Cathode Ray Tube) TV<\/b> is a rare sight in thrift stores now. But inside that massive box lies a thrilling drama of physics<\/b> that connects directly to modern cutting-edge science. Today, let\u2019s use our “science eyes” to dissect this former star of the living room.<\/p>\n

The Electron Gun: A Particle Accelerator in Your Home<\/h3>\n

At the heart of a CRT TV sits a device called an electron gun<\/b>.<\/p>\n

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This gun fires invisible, microscopic particles called electrons<\/b> at incredible speeds. These electrons hurtle toward the screen at tens of thousands of kilometers per hour. When they strike the phosphors on the screen, the impact creates light, allowing us to see an image.<\/p>\n

You could call it a “pointillist painting made of light particles.” It\u2019s amazing to think that every household used to have a device for manipulating microscopic particles<\/b>\u2014the kind of tech scientists use in labs\u2014right there in the living room!<\/p>\n

Today, I\u2019ll share a nostalgic and exciting experiment using one of these TVs. If you happen to have an old CRT TV, try to imagine its inner workings as you read. Our theme: What happens when you bring a magnet close to a CRT TV!?<\/b><\/p>\n

A Dance of Electrons and Magnets: The Secret Behind the Warp<\/h3>\n

What exactly happens when you bring a magnet near the screen? Watch this surprising footage.<\/span><\/p>\n