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Only a few elements can be permanent magnets - iron is one. Copper is not. But if you pass an electric current through any metal it becomes a magnet - an electromagnet. But how does this work? Well...
[ Music ] >> Sit down at the table, please. Come on, guys. At the table, please. [music] Yeah. [ Music ] >> We have a new baby. [laughter] >> Yes. [laughter]...
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My entire life I've done what everyone told me I should do. From kindergarten to my senior year of college I had a high GPA, I volunteered, I played sports, I was in groups, extracurricular...
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To make a laser, all you need to do is give a big collection of atoms enough energy so they're excited and ready to emit light. Once one of them spontaneously emits a photon, it'll...
Our world and our society are constantly changing products and services are becoming more and more complex and sophisticated new technologies are becoming a big part of our daily lives we're also now...
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