Old English seofon, of Germanic origin; related to Dutch zeven and German sieben, from an Indo-European root shared by Latin septem and Greek hepta .
seofonfeald
sevenfold
Feald (plural Fealder)
field
A pulsating magnetic field is produced, when the stator winding of the single-phase induction motor shown below is energised by a single phase supply. The word Pulsating means that the field builds up in one direction falls to zero and then builds up in the opposite direction.
In response The Mac to his Publication
In knot theory, the 7 knot, also known as the septoil knot, the septafoil knot, or the (7, 2)-torus knot, is one of seven prime knots with crossing number seven.
In response The Mac to his Publication
