Show V WHY DOES A MAGNET T LIFT THINGS T TIlE exact principle which causes a n magnet to take lake hold of metals and cling to them with a force torce which overcomes overcomes overcomes over over- comes the principle of gravity Is like electricity one of ot the unsolved mysteries mysteries mysteries mys mys- teries of nature We merely know that a n piece of ot Iron which has been electrically treated will attract and hold bold various other metals The force torce which It exerts we call coil magnetism and let It go at that just that Just as we speak of electricity personality and radio activity all nIl of ot which are aref f forces which puzzle science and up to this time have defied a 0 clear ex ex- The most logical explanation explanation tion would appear to be that an nn elec elec- treated treated piece of ot Iron gives oft off offa a force analogous to that given ghen off oft by bya byo a o piece of ot radium In that It will affect af at- feet other pieces of 01 metal without materially lessening Its own power The name magnet Is derived from the mineral magnetite and this In turn Is so called colled because It was first discovered In Magnesia Magnetite Is Isa Iso isa a o natural magnet of which the loadstone loadstone load lond stone ston Is one of ot the known best varie vane ties Copyright t. t |