theBrilliance * is a fun and educative, discovery segment that focuses on single information such as definitions, meaning and classifications.
Legends of magnetic levitation were common in ancient and mediaeval times, and their spread from the Roman world to the Middle East and later to India has been documented by the classical scholar Dunstan Lowe.
Many subsequent reports described levitating statues, relics or other objects of symbolic importance, and versions of the legend have appeared in diverse religious traditions, including Christianity, Islam, Buddhism and Hinduism. In some cases they were interpreted as divine miracles, while in others they were described as natural phenomena falsely purported to be miraculous; one example of the latter comes from St Augustine, who refers to a magnetically suspended statue in his book The City of God (c. 410 AD). Another common feature of these legends, according to Lowe, is an explanation of the object’s disappearance, often involving its destruction by non-believers in acts of impiety. Although the phenomenon itself is now understood to be physically impossible, as was first recognized by Samuel Earnshaw in 1842, stories of magnetic levitation have persisted to modern times, one prominent example being the legend of the suspended monument in the Konark Sun Temple in Eastern India.
Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations.
The two primary issues involved in magnetic levitation are lifting forces: providing an upward force sufficient to counteract gravity, and stability: ensuring that the system does not spontaneously slide or flip into a configuration where the lift is neutralized.
Magnetic levitation is used for maglev trains, contactless melting, magnetic bearings and for product display purposes.
Image via : Glow Design