Carnot's theorem

Carnot's theorem or Carnot's principle may refer to:

In geometry:

• Carnot's theorem (inradius, circumradius), describing a property of the incircle and the circumcircle of a triangle
• Carnot's theorem (conics), describing a relation between triangles and conic sections
• Carnot's theorem (perpendiculars), describing a property of certain perpendiculars on triangle sides

In physics:

• Carnot's theorem (thermodynamics), setting a maximum efficiency obtainable from a heat engine

• Carnot cycle, in thermodynamics

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