• Condenser (heat transfer)
  Condenser (heat transfer)
  In systems involving heat transfer, a condenser is a device or unit used to condense a substance from its gaseous to its liquid state, typically by cooling it. In so doing, the latent heat is given up by the substance, and will transfer to the condenser coolant...
  
  , a device or unit used to condense vapor into liquid. More specific articles on some types include:
• Air coil used in HVAC refrigeration systems
• Condenser (laboratory)
  Condenser (laboratory)
  In a laboratory a condenser is a piece of laboratory glassware used to cool hot vapors or liquids. A condenser usually consists of a large glass tube containing a smaller glass tube running its entire length, within which the hot fluids pass....
  
  , a range of laboratory glassware used to remove heat from fluids
• Steam locomotive condensing apparatus
  Steam locomotive condensing apparatus
  A steam locomotive condensing apparatus differs in purpose from the usual closed cycle steam engine condenser, in that its function is primarily either to recover water, or to avoid excessive emissions to the atmosphere, rather than maintaining a vacuum to improve both efficiency and power...
  
  
• Surface condenser, a heat exchanger installed in steam-electric power stations to condense turbine exhaust steam into water
• Condenser (optics)
  Condenser (optics)
  A Condenser is an optical lens which renders a divergent beam from a point source into a parallel beam illuminating an object. It is an essential part of any imaging device, such as microscopes, slide projectors, and telescopes...
  
  , in classical optics gathers visible light and directs it onto a projection lens
• Condenser (microscope), a group of lenses mounted below the stage of an optical microscope to concentrate light
• Capacitor
  Capacitor
  A capacitor is a passive two-terminal electrical component used to store energy in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric ; for example, one common construction consists of metal foils separated...
  
  , formerly called a condenser, an electrical device that can store energy
• Condenser microphone, a device that converts sound waves into an electrical signal
• Steam locomotive condensing apparatus
  Steam locomotive condensing apparatus
  A steam locomotive condensing apparatus differs in purpose from the usual closed cycle steam engine condenser, in that its function is primarily either to recover water, or to avoid excessive emissions to the atmosphere, rather than maintaining a vacuum to improve both efficiency and power...
  
  , a condenser fitted to steam locomotives for use in tunnels and to increase range
• Synchronous condenser
  Synchronous condenser
  In electrical engineering, a synchronous condenser is adevice identical to a synchronous motor, whose shaft is not connected to anything but spins freely. Its purpose is not to convert electric power to mechanical power or vice versa, but to adjust conditions on the electric power transmission grid...
  
  , a rotating machine similar to a motor, used to control AC power flow in electric power transmission

See also

• Köhler illumination
  Köhler illumination
  Köhler illumination is a method of specimen illumination used for transmitted and reflected light optical microscopy. Köhler illumination acts to generate an extremely even illumination of the sample and ensures that an image of the illumination source is not visible in the resulting image...
  
  
• Telescope
  Telescope
  A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation . The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s , using glass lenses...
  
  
• Projector (disambiguation)
• Enlarger
  Enlarger
  An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives using the gelatin silver process, or from transparencies.-Construction:...