48 Faraday as a Discoverer. 
to the globe of the earth. He plays like a magician with the 
earth’s magnetism. He sees the invisible lines along which its © 
magnetism. ; a 
And then his thoughts suddenly widen, and he asks himsell 
- ing earth does not generate induced currents 
as it turns round its axis from west to east. In his experimel! | 
galvanometer wire would necessarily be carried along with cs : 
