Measuring instrument


power(flux of energy)
A physical system that exchanges energy may be described by the amount of energy exchanged per time-interval, also called power or flux of energy.
  • (see any measurement device for power below)
For the ranges of power-values see: Orders of magnitude (power).
Action
Action describes energy summed up over the time a process lasts (time integral over energy). Its dimension is the same as that of an angular momentum.
  • A phototube provides a voltage measurement which permits the calculation of the quantized action (Planck constant) of light. Also see photoelectric effect.
Mechanics
This includes basic quantities found in classical- and continuum mechanics; but strives to exclude temperature-related questions or quantities.
Length (distance)
  • Length, distance, or range meter
For the ranges of length-values see: Orders of magnitude (length)
Area
  • Planimeter
For the ranges of area-values see: Orders of magnitude (area)
Volume
If the mass density of a solid is known, weighing allows to calculate the volume.Buoyant weight (solids)
  • Overflow trough (solids)
  • Measuring cup (grained solids, liquids)
  • Flow measurement devices (liquids)
  • Graduated cylinder (liquids)
  • Pipette (liquids)
  • Eudiometer, pneumatic trough (gases)
For the ranges of volume-values see: Orders of magnitude (volume)
Mass- or volume flow measurement
  • Gas meter
  • Mass flow meter
  • Metering pump
  • Water meter
Speed (flux of length)
  • Airspeed indicator
  • Radar gun, a Doppler radar device, using the Doppler effect for indirect measurement of velocity.
  • LIDAR speed gun
  • Speedometer
  • Tachometer (speed of rotation)
  • Tachymeter
  • Variometer
For the ranges of speed-values see: Orders of magnitude (speed)
Acceleration
  • Acceleron

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