It’s thus worth putting in the effort to make a better antenna, and if you’re not fortunate enough to have a lot of space, your best choice may be a magnetic ... around. The idea of a loop ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram ... This self-sustaining loop is known as the geomagnetic dynamo. Energy is needed ...

How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

It’s difficult to see the sun’s magnetic field lines, which loop through the solar atmosphere ... driven flows of gas and plasma within and around the sun that contribute to sunspot formation.