The study of electromagnetism began over 2,000 years ago with the ancient Greek philosopher Thales's (624-546 b.c.) discovery that when amber (elektron in Greek) was rubbed, it was able to pick up lightweight objects. Lodestone, found in the region of...

Electricity and magnetism are manifestations of a single underlying electromagnetic force. Electromagnetism is a branch of physical science that describes the interactions of electricity and magnetism, both as separate phenomena and as a singular...

Electromagnetism is a branch of physical science that involves all the phenomena in which electricity and magnetism interact. This field is especially important to electronics because a magnetic field is created by an electric current. The rules of...

One of the most controversial and intangible types of pollution is invisible electromagnetic radiation emitted mostly from electrical power lines. A host of modern electric devices, including computer video display terminals (VDTs), microwave ovens,...

Electromagnetism is the physics of the electromagnetic field: a field which exerts a force on particles that possess the property of electric charge, and is in turn affected by the presence and motion of those particles. The magnetic field is produced...

N. Ida, Engineering Electromagnetics, Springer, 2000, 1215 pp., £82.50. Engineering Electromagnetics is a new text aimed primarily at undergraduate teaching although it could easily serve as a reference text for those interested in the area. Electromagnetics is a notoriously unpopular topic with many...

The technology to levitate rotors and eliminate bearing contact in compressors is reaching the hvac industry, promising to increase efficiency and make operational costs more, well ... bearable. One of decade's most significant advances in centrifugal compressor bearing technology has been introduced...

When biologist Harriet Ball noticed that a popular vitamin B-enriched yogurt made by Nestle promised to "optimize the release of energy," she was suspicious.So she called the company and asked exactly how it worked.According to Ball, Nestle's representative said the yogurt would "get the optimum...

Terror And Technology: A new study warns of a clear and present danger that would dwarf the attacks on the World Trade and the Pentagon. So why does Congress want to cut the one program that could prevent it?The extent of the threat posed by...

Defines electromagnetism and its strengths. Provides details of an experiment attempting to find out how the strength of an electromagnet is affected by the number of turns, voltage supplied or current given. Gives the results of the experiment.