The poncelet (symbol p) is an obsolete unit of power, once used in France and replaced by (ch, metric horsepower). The unit was named after Jean-Victor Poncelet.François Cardarelli, ''Encyclopaedia of Scientific Units, Weights and Measures: Their Si Equivalences and Origins'', Springer, 2003, , page 527 One poncelet is defined as the power required to raise a hundred-kilogram mass (

quintal The quintal or centner is a historical unit of mass in many countries that is usually defined as 100 base units, such as pounds or kilograms. It is a traditional unit of weight in France, Portugal, and Spain and their former colonies. It is com ...

) at a velocity of one metre per second (100

kilogram-force The kilogram-force (kgf or kgF), or kilopond (kp, from ), is a non-standard Gravitational metric system, gravitational metric unit of force. It is not accepted for use with the International System of Units (SI) and is deprecated for most uses. T ...

·m/s). : 1 p = 980.665 W = {{sfrac, 4, 3 ch ≈ 1.315 hp (imperial horsepower)

References

Units of power Obsolete units of measurement Metrication in France