millijoules

Thousandths of joules

Millijoules are units of energy equal to one-thousandth of a joule.

The measurement appears in technical contexts involving small energy quantities—electronics, laser output, medical devices: The defibrillator delivered 150 millijoules.

Abbreviated mJ.

physics

work

Effort toward a goal

  • heatTransferred thermal energy
  • powerEnergy transfer rate
  • forceStrength or compulsion

distance · thermodynamics · enthalpy · entropy · exothermic · endothermic · conservation · dissipation

energy-units

kilojoules

SI energy units

electronvolts · ergs · BTU · foot-pounds · kilowatt-hours · therms

small-scale

microelectronics

Tiny circuit component engineering

  • MEMSMicroscale electromechanical devices
  • biosensorsDevices detecting via biological reactions
  • pacemakersImplanted cardiac rhythm devices

piezoelectric · wearables · photonics · nanotechnology · miniaturization

measurement

quantify

Express numerically

instrumentation · sensors · calorimetry · spectroscopy · dosimetry · detection · threshold · readings · sensitivity · resolution

applications

defibrillators

Devices restoring heart rhythm

ablation · phototherapy

Opposites
metric scale magnitude

millijoulesmegajoules

Energy measurement units

kilojoules · joules

Family

millijoule

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