![]() ![]() You may say that the frog is now built up of these tiny magnets all of which are repelled by the large magnet. Similarly, the north pole of the external field will try to push away the “north poles” of magnetized atoms. Our magnets create a very large magnetic field (about 100 to 1000 times larger than a household magnets). In this field, all the atoms inside the frog act as very small magnets, creating a small field. Magnets push each other away if you try to bring together their like poles, the two north or two south poles. But those are exceptions to the general rule. ![]() Their magnetic “needles” are oriented in the same direction. The atoms behave as little magnetic needles pointing in the direction opposite to the magnetic field. There are a few materials (such as iron) whose atoms are a bit crazy and love to be in a magnetic field. They change their motion in the opposite direction of the external influence. Each atom contains electrons that circle around the core called nucleus. If you place an atom in a magnetic field (or a large piece of a matter containing billions and billions of atoms), electrons doing their circles inside don’t like this very much. ![]() All matter in the universe consists of small particles called atoms. To explain, we have to start at the beginning. We use it to investigate molecules and materials. At our lab, we develop and build magnets that have a very high magnetic fields. With magnetic fields high enough you can levitate all diamagnetic materials. It might give you the impression that materials around us are mainly nonmagnetic. Molecular magnetism is always present, although it is very weak and usually remains unnoticed. It is possible to levitate magnetically every material and every living creature on earth. How can they levitate? Lesson #1: Everything can levitate These photographs of water and a frog hovering inside a magnet (not on board a spacecraft) are the first observations of magnetic levitation of living organisms in a room-temperature environment. Seeing is believing: a little frog (alive !) and a water ball levitate inside a Ø32mm vertical bore of a Bitter solenoid in a magnetic field of about 16 Tesla. Free-electron lasers for THz and IR radiation.Experimental equipment Experimental equipment.Diamagnetic Levitation Diamagnetic Levitation.Levitation explained Levitation explained. ![]()
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