8 Anti-weight

To compensate for the weight of an object, merge it with other objects that provide lift.
  • Inject foaming agent into a bundle of logs, to make it float better.
  • Use helium balloon to support advertising signs.

To compensate for the weight of an object, make it interact with the environment (e.g. use aerodynamic, hydrodynamic, buoyancy and other forces).
  • Aircraft wing shape reduces air density above the wing, increases density below wing, to create lift. (This also demonstrates Principle 4, Asymmetry.)
  • Vortex strips improve lift of aircraft wings.
  • Hydrofoils lift ship out of the water to reduce drag.
TRIZ principe 8


Is this principle frequently used?

This principle is rarely used with 44 instances in the matrix.

This principle is proposed to solve the following contradictions:

Click on a contradiction to explore it

1/3 1/9 1/10 1/35 2/10 2/23 2/27 3/1 3/9 3/11 3/12 3/13 3/14 3/19 4/8 4/21 8/4 9/3 9/14 9/19 9/32 10/1 10/23 12/1 13/38 14/1 14/3 14/9 19/9 21/1 26/38 27/1 27/2 27/10 27/35 32/9 32/38 33/15 33/27 35/1 35/12 35/27 37/27 38/18


The colour indicates the ranking of the proposed principle to solve the contradiction: 1st, 2nd, 3rd, 4th.
This ranking reflects the frequency of occurrence of the principle in the analysed patents for this type of contradiction.
When a principle appears in first position, it means that it is statistically the most used in the patents studied for this type of problem.

Using TRIZ in your organization?

Discover our structured creativity training to solve your technical challenges with your R&D teams.