Algebar and Elgebar are seen in poetry for this star, but it universally is known as Rigel, from Rijl Jauzah al Yusra, the Left Leg of the Jauzah (Jauzah was the Arabic title for Orion), by which extended title the Arabians knew it after the word Jauzah had become a personal title; the modern name first appearing in the Alfonsine Tables of 1521.
MAGNET: A material that has the property, either natural or induced, of attracting iron or steel. MAGNETIC FIELD: The space around a magnet in which the magnetic force can be detected. MAGNETIC FLUX: The total magnetic induction across or through a specified area. MAGNETIC INDUCTION, B: The production of magnetic properties in a magnetizable substance when placed in a magnetic field.
Stockbyte/Stockbyte/Getty Images. A permanent magnet is a piece of iron or a similar metal having its own magnetic field. Under ideal conditions, it will retain its magnetic strength for many years.Frequent drops, impacts or high temperatures weaken it.agnetic Circuit. A magnetic field holds its strength best when the entire magnetic loop, or circuit, passes through a ferromagnetic metal at all points. A horseshoe magnet has an air gap between its two poles; the keeper closes this gap. A bar magnet, left by itself, will lose its strength over several months.