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40 Inventive Principles
Changing Colour

a) Change the colour of an object or its external environment.

b) Change the degree of transparency of an object or its external environment.

c) Use coloured additives to observe an object or process which is difficult to see.

d) If such additives are already being used, add luminescent traces or tracer elements.
 

EXAMPLE:
  1. To detect and locate very small leaks in cooling systems, a fluorescent substance is added to the coolant, which becomes visible under ultraviolet light.
  2. A transparent bandage allows a wound to be inspected without removing the dressing.