A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field.
Magnetic Field Lines. Einstein is said to have been fascinated by a compass as a child, perhaps musing on how the needle felt a force without direct physical contact.
Nevertheless, they are useful tools for thinking about magnetic field lines and to otherwise conceptualize ideas about magnetism.
The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet.
Steel is said to be magnetically ‘hard’. Magnetic field lines. We imagine a magnet to be surrounded by an invisible ‘magnetic field’, which we represent by field lines or lines of force.
The idea of magnetic field lines and magnetic fields was first examined by Michael Faraday and later by James Clerk Maxwell.
An alternative method of visualizing the magnetic field is to use "magnetic field lines."
Magnetic field lines describe the structure of magnetic fields in three dimensions. A compass needle will always try to point along a field line.
Equipotential Lines, Electric and Magnetic Field Mapping. Objectives: Equipment
Both electric & magnetic field lines are introduced as an aid for visualizing electric both fields. These lines are imaginary straight or curved paths along which a free (isolated)...