40 Inventive Principles

a) Use an intermediate object to transfer or carry out an action.

b) Connect one object temporarily with another that can be easily removed.

  1. For the non-destructive monitoring of the degree of setting of polymers, a magnetic powder is added to the substance. During setting, the changes in the permeability are measured.
  2. For a loss-free supply of current in molten baths, easily removable metal electrodes with a higher melting point are used.