{"id":67920,"date":"2026-09-30T07:13:55","date_gmt":"2026-09-29T22:13:55","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=67920"},"modified":"2026-09-30T07:13:55","modified_gmt":"2026-09-29T22:13:55","slug":"the-right-hand-screw-rule-are-magnets-really-just-moving-electricity-discover-the-wonders-of-electromagnetism-in-everyday-life","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=67920&lang=en","title":{"rendered":"[The Right-Hand Screw Rule] Are Magnets Really Just “Moving Electricity”?! Discover the Wonders of Electromagnetism in Everyday Life"},"content":{"rendered":"

Ken Kuwako, Science Trainer. Every day is an experiment.<\/strong><\/p>\n

The Magnetic Field Made by Electric Current: Uncovering the Link Between Electricity and Magnetism<\/strong><\/p>\n

\"\"<\/p>\n

Did you ever play with a magnet and iron sand at the sandbox as a kid? Chances are that mysterious pull got you pretty excited. And what about rubbing a plastic pencil board on your head to make your hair stand on end? Static electricity is another everyday phenomenon we all meet in science class. But how would you feel if I told you that the “force of magnets” and the “force of static electricity” actually spring from the very same thing: electricity?<\/p>\n

For a long time, scientists believed these two forces were completely separate. Then, in 1820, the Danish physicist Hans Christian \u00d8rsted made a discovery that changed history. When he ran an electric current through a wire, the compass needle sitting nearby swung to point in a new direction. It looked like magic.<\/p>\n

This discovery proved that “moving electricity” (electric current) creates magnetism. Static electricity has nothing to do with magnetism, yet the moment it starts to flow, it suddenly becomes magnetic. Electricity and magnetism, once thought to be two unrelated forces, turned out to be two sides of the same coin. Let’s take a look at the key law behind this connection, and how we put it to use.<\/p>\n

What Is a Magnetic Field?<\/strong><\/h3>\n

First, let’s get to know the “magnetic field,”<\/strong> an essential idea for understanding how magnetic forces work. A magnetic field is the region of space where magnetic forces are felt, and it surrounds magnets and electric currents. Hold iron sand up to a magnet and it clings thickly to the N and S poles, right? That’s because the magnet creates a magnetic field around itself, and that field pulls the iron sand in.<\/p>\n

People have known about the mysterious power of magnets since ancient times. Natural magnets were commonly found in the Magnesia region of Turkey, and that’s said to be where the word “magnet” comes from. Every magnet has two poles, N and S. Just like with static electricity, like poles repel each other and opposite poles attract.<\/p>\n

There’s a way to actually see these magnetic forces at work: magnetic field lines<\/strong>. Place compasses around a bar magnet and their needles will line up in a neat, orderly pattern. Follow the direction the N end of the needle points and draw a line, and a beautiful curve appears, leaving the N pole and looping back into the S pole. That’s a magnetic field line. The more tightly packed the lines are, the stronger the magnetic field.<\/p>\n

\"\"<\/p>\n

\u30c8\u30f3\u30c8\u30f3\u53e9\u304f\u3060\u3051\u3067\u6d6e\u304b\u3073\u4e0a\u304c\u308b\u3001\u78c1\u529b\u7dda\u306e\u3075\u3057\u304e\u306a\u6a21\u69d8\uff08\u78c1\u754c\u306e\u89b3\u5bdf\uff09<\/a><\/p><\/blockquote>\n