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5.1.5. TRIZ Principles: Substances and Fields
How To Invent (Almost) Anything > 5. Basic TRIZ > 5.1. TRIZ Principles > 5.1.5. TRIZ Principles: Substances and Fields < Prev Chapter | Next Chapter >
In all devices there are two basic elements: parts of the system, or substances, and the medium through which they interact, or fields. The substances can include parts of the system, such as wheels and cutting edges, and also external elements such as the atmosphere and a rock that is being drilled. The field may be mechanical connection, electromagnetic, hydraulic, chemical, acoustic, etc.
Problems often occur because either the parts interact inefficiently or they
interact when they should not. By identifying these ‘substances’ that interact
and the field through which they interact, you can discover where improvements
are required and hence a focus for invention. Other principles
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