Optics and photography

• Diaphragm (optics)
  Diaphragm (optics)
  In optics, a diaphragm is a thin opaque structure with an opening at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture...
  
  , a stop in the light path of a lens, having an aperture that regulates the amount of light that passes
• Diaphragm shutter, a type of leaf shutter consisting of a number of thin blades in a camera

Acoustics

• Diaphragm (acoustics)
  Diaphragm (acoustics)
  In the field of acoustics, a diaphragm is a transducer intended to faithfully inter-convert mechanical motion and sound. It is commonly constructed of a thin membrane or sheet of various materials. The varying air pressure of the sound waves imparts vibrations onto the diaphragm which can then be...
  
  , a thin, semi-rigid membrane that vibrates to produce or transmit sound waves

Other

• Social diaphragm, a circle of friends, family, social circle
• Thoracic diaphragm
  Thoracic diaphragm
  In the anatomy of mammals, the thoracic diaphragm, or simply the diaphragm , is a sheet of internal skeletal muscle that extends across the bottom of the rib cage. The diaphragm separates the thoracic cavity from the abdominal cavity and performs an important function in respiration...
  
  , a thin sheet of muscle under the lungs
• Diaphragm (contraceptive)
  Diaphragm (contraceptive)
  The diaphragm is a cervical barrier type of birth control. It is a soft latex or silicone dome with a spring molded into the rim. The spring creates a seal against the walls of the vagina.-Use:...
  
  , a small rubber dome placed in the vagina to wall off the cervix, thus preventing sperm from entering
• Diaphragm (mechanical device), a sheet of a semi-flexible material anchored at its periphery
• Diaphragm seal
  Diaphragm seal
  A diaphragm seal is a flexible membrane that seals and isolates an enclosure. The flexible nature of this seal allows pressure effects to cross the barrier but not the material being contained....
  
  , a membrane that seals an enclosure
• Diaphragm pump
  Diaphragm pump
  A diaphragm pump is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable non-return check valves to pump a fluid...
  
  , a type of pump
• Diaphragm arch
  Diaphragm arch
  A diaphragm arch is a transverse wall-bearing arch forming a partial wall dividing a vault or a ceiling into compartments.When used under a wooden roof, it has the advantage of providing a partial firebreak. It was first used in Roman Syria, during the 2nd century AD....
  
  , a type of arch
• Diaphragm wall, a type of wall
  Wall
  A wall is a usually solid structure that defines and sometimes protects an area. Most commonly, a wall delineates a building and supports its superstructure, separates space in buildings into rooms, or protects or delineates a space in the open air...
  
  
• Diaphragm valve
  Diaphragm valve
  Diaphragm valves consists of a valve body with two or more ports, a diaphragm, and a "saddle" or seat upon which the diaphragm closes the valve. The valve is constructed from either plastic or steel....
  
  , a type of valve
• Diaphragm (structural system)
  Diaphragm (structural system)
  In structural engineering, a diaphragm is a structural system used to transfer lateral loads to shear walls or frames primarily through in-plane shear stress...
  
  , a structural engineering system used to resist lateral loads
• Diaphragm
  Diaphragm
  -Optics and photography:* Diaphragm , a stop in the light path of a lens, having an aperture that regulates the amount of light that passes* Diaphragm shutter, a type of leaf shutter consisting of a number of thin blades in a camera-Acoustics:...
  
   another name for a separator
  Separator
  Separator can refer to:* Cream separator, separates cream from milk* Community separator, a term of urban planning* Separator , of an oil production plant* Vapor-liquid separator, separates a vapor-liquid mixture...
  
   in electrochemical systems.
• Diaphragma
  Diaphragma
  In taxonomy, Diaphragma is a genus of algae, in the family Chaetophoraceae.-Scientific databases:* * *...
  
   a genus of algae.

See also

• Lamina
  Lamina (disambiguation)
  Lamina may refer to:* Lamina of the vertebral arch* Planar lamina, a two-dimensional planar closed surface with mass and density, in mathematics* Lamina face, a face sharing all edges, in computer graphics* A thin plate, sheet or layer, such as:...
  
  
• Membrane