Polyteknisk Boghandel

In Roman legend a shepherd named Magnes, climbing a rocky hillside, was shocked to find that he could hardly move: his iron-studded boots and iron-tipped rod kept sticking to the rocks. Thus was recorded a mysterious natural phenomenon, magnetism, that would intrigue scientists and ordinary mortals. What was this invisible force? What caused it? Even after the compass was invented, no one understood what caused its needle to swing. Astonishingly, the answer to the mystery would not be fully revealed until the advent of supercomputers. North Pole, South Pole is the story of a quest that occupied scientific geniuses for a millennium.This absorbing book will make you marvel at the inner workings of our planet and its magnetic shield, without which life as we know it would be impossible.