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.
Magnetic Keepers. If two magnets are placed side by side there will be mutual repulsion or attraction. This weakens the strength of the magnet. To prevent this, bar magnets are placed side by side with opposite poles near. A soft iron piece called a keeper is placed across the poles as shown in figure.This soft iron piece provides a path for the magnetic field lines to form a continuous loop.Thus it helps in preserving the magnetic field.f two magnets are placed side by side there will be mutual repulsion or attraction. This weakens the strength of the magnet. To prevent this, bar magnets are placed side by side with opposite poles near.