Re: magnets and health

[Maurice Barnhill <mvb@udel.edu>]

David Dockstader wrote:
> .... For one project a student had investigated the effect
> of lodestone (magnitite) on plant growth.  He grew a bunch of beans in soil 
> with magnetite pebbles scattered in the soil and in a control plot with the same
>  soil and no magnitite.  The soil with magnitite produced larger bean pods and
> a more extensive root system, but roughly the same sized plants.  

    Do you know if the soil without magnetite had an adequate amount of iron 
and any other nutrients that the magnetite might have introduced?

-- 
 \ _____ /             Maurice Barnhill, mvb@udel.edu                 /\___/\
  |_____|           http://www.physics.udel.edu/~barnhill/           ( O   O )
 /       \  Physics Dept., University of Delaware, Newark, DE 19716  (___V___)