How Can Magnets Move Things Without Touching Them?
Why do they attract or repel each other, depending on their positioning? And what makes neodymium magnets so much stronger than the ceramic magnets we played with as children? To understand the answers to these questions, it helps to have a basic definition of a magnet. Magnets are objects ...
But in the quantum mechanics view, electrons emit undetectable, virtual particles that tell other objects to move away or come closer, Walker said. Although these two theories help scientists understand how magnets behave in almost every circumstance, two important aspects of magnetism remain ...
Ah, magnets. Refrigerators are full of ’em. They power our Netflix binge-sessions. When broken down into tiny pieces and smashed into Silly Putty, they can provide hours of fun. But how do magnets work in the first place? Magnetism is the force exerted by magnets—objects that repel or...
Dimagnetism refers to an object's tendency to generate a weak magnetic field in opposition to a magnetic field applied to it. Dimagnetic objects repel magnets. Water is dimagnetic, although it is not as strongly dimagnetic as carbon-graphite. The presence of a strong magnetic field can cause...
How Magnets Work Magnets are really cool. Anything that’s magnetic will stick to them. And because of the invisible magnetic field they produce around themselves, they can make things move without touching them. Here are a couple of neat things you can do with magnets to learn about how ...
Patterns of Flocks of Starlings Mathematically Behave How Magnets Would Move Starling flock Starlings, a small to medium-sized passerine bird in the familySturnidae, achieve extraordinary coordination in flight and they behave mathematically as metals being magnetized. A new study published its findings...
Introduction to Reed Switches, Magnets and Magnetic Fields by Stephen Day. Quite a neat summary of how reed switches are used in practice, and the need to choose the right magnet to avoid the switch going on or off too many times.
So how do geckos defy one of the most basic laws of physics? If a force acts on an object, but that object doesn't move, there must be another force acting in the opposite direction. In other words, two forces must be exactly balancing one another. Since the gecko doesn't fall, ...
As we said before, drones take photos and videos but how do they go about it? They use built-in, high-end cameras to shoot photos and videos. With the help of special devices known as “gimbals”, the cameras stay in place to take smooth aerial shots while the drones move around. ...