Show students of magnetism MB tim the tile in ignette properties of u certain substances were known to the early gruels the earliest in of 0 magnets cre ere n nade ade by I 1 eter ter I 1 re grinus of murl ourt tt a student of 0 hoger roger bacon and la in au fast gust 1 00 OO he wrote arote a letter which vai was the lie first treatise on magnetism it we was not until 1581 that rol holert ert norman glies a clear statement of the fundamental lana of colun the heat of arctic waters la in said to be a source of energy greater than that from niagara |