22. Convert Harm Into Benefit
A. Utilize harmful factors or environmental effects to obtain a positive effect.
Example:
• Methane Usage/Turbo Charger
• Use waste heat to generate electric power.
• Recycle scrap.
B. Remove a harmful factor by combining it with another harmful factor.
Example:
• Chemotherapy.
C. Increase the amount of harmful action until it ceases to be harmful.
Example:
• Sand or gravel freezes solid when transported through cold climates. Over-freezing (using liquid nitrogen) makes the ice brittle, permitting pouring.
• When using high frequency current to heat metal, only the outer layer became hot. This negative effect was later used for surface heat-treating.
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