1 joule
1 JEnergy · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Energy
A little work
ENERGY STORED OR TRANSFERRED
The quantity is exact as entered.
Lifting an apple one metre is the work needed to raise a small object against Earth's gravity over that distance.
A little perspective
The energy of lifting an apple one metre is about 1.77 times 1 joule.
Energy: 1 J; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Energy: 1.765 J; defined energy model.
Work against gravity for a 180 g apple raised 1 m, using 9.80665 m/s² and rounding.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
Measurement details
Compare 1 joule with the energy of lifting an apple one metre. The notes below explain how each value was chosen.
Energy · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Energy · defined energy model
Work against gravity for a 180 g apple raised 1 m, using 9.80665 m/s² and rounding.
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
Energy is an amount; power describes the rate of energy transfer or use.
Change your perspective
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A little smaller. A little larger.