background preloader

Electricity and magnetism

Facebook Twitter

Researchers discover superatoms with magnetic shells. Public release date: 8-Jun-2011 [ Print | E-mail Share ] [ Close Window ] Contact: Sathya Achia 804-827-0890Virginia Commonwealth University RICHMOND, Va.

Researchers discover superatoms with magnetic shells

(June 8, 2011) – A team of Virginia Commonwealth University scientists has discovered a new class of 'superatoms' – a stable cluster of atoms that can mimic different elements of the periodic table – with unusual magnetic characteristics. The superatom contains magnetized magnesium atoms, an element traditionally considered as non-magnetic. Transformers. In the photograph, note that the coil on the left has fewer coils than that at right (the insets show close-ups).


The sketch and circuit show a step-up transformer. To make a step-down transformer, one only has to put the source on the right and the load on the left. (Important safety note: for a real transformer, you could only 'plug it in backwards' only after verifying that the voltage rating were appropriate.) Electromagnetic waves. At this point in the course we'll move into optics.

Electromagnetic waves

This might seem like a separate topic from electricity and magnetism, but optics is really a sub-topic of electricity and magnetism. This is because optics deals with the behavior of light, and light is one example of an electromagnetic wave. Light and other electromagnetic waves Light is not the only example of an electromagnetic wave. Other electromagnetic waves include the microwaves you use to heat up leftovers for dinner, and the radio waves that are broadcast from radio stations. Articles on "Electricity".