Related Words

Polarity: The contrasting and complementary qualities shown by signs opposite each other in the zodiac.

Polarity Therapy: Polarity therapy is based on universal principles of energy--attraction, repulsion, and neutrality. The interrelation of these principles forms the basis for every aspect of life, including . . . View Full Definition

Polarity Event: A specific event in the history of Earth's magnetic field. Usually used in reference to a specific polarity reversal.

Polarity Reversal: A change in the polarity of Earth's magnetic field in which the north magnetic pole becomes the south magnetic pole and vice versa. Also known as geomagnetic reversal or magnetic reversal. E . . . View Full Definition

Magnetic Polarity: It is a fundamental principle of a winding that adjacent poles must be wound to give opposite magnetic polarity. This does not mean that the coils actually have to be wound in this direction . . . View Full Definition

Polarity Epoch: An interval of time between reversals of Earth's magnetic field.

Magnetic Stratigraphy: The study and correlation of polarity epochs and events in the history of the Earth's magnetic field as contained in magnetic rocks.

Reversing: Unless otherwise specified, a general-purpose DC motor is reversible. A DC motor can be reversed by changing the polarity of the field or the armature, but not both. When rapid reversing is . . . View Full Definition

Magnetic Reversal: A change in the polarity of Earth's magnetic field in which the north magnetic pole becomes the south magnetic pole and vice versa. Also known as geomagnetic reversal or polarity reversal. E . . . View Full Definition

Electrical Degree: A unit of measurement of time as applied to alternating current. One complete cycle =360 electrical degrees. One cycle in a rotating electric machine is accomplished when the rotating field . . . View Full Definition