Definizione monolingua

diaphragm

diaphragm (third-person singular simple present diaphragms, present participle diaphragming, simple past and past participle diaphragmed)

1. (optics, photography) To reduce lens aperture using an optical diaphragm.
   • 1870, D. Appleton & Co., Appletons Annual Cyclopædia and Register of Important Events of the Year 1869^[2], page 43:

     He employs an equatorial with an object-glass having a focal length of five metres, and which was diaphragmed down to eight centimetres.

2. To act as a diaphragm, for example by vibrating.
   • 1996, Tom Drozda et al., Tool and Manufacturing Engineers Handbook, vol. VIII: Plastic Part Manufacturing^[3], ISBN 0872630854, page 16-24:

     The holes and burning are caused by the part diaphragming at 20000-40000 cycles/second.

diaphragm (plural diaphragms)

1. (anatomy) In mammals, a sheet of muscle separating the thorax from the abdomen, contracted and relaxed in respiration to draw air into and expel air from the lungs; also called thoracic diaphragm.
2. (anatomy) Any of various membranes or sheets of muscle or ligament which separate one cavity from another.
3. A contraceptive device consisting of a flexible cup, used to cover the cervix during intercourse.
4. (mechanics) A flexible membrane separating two chambers and fixed around its periphery that distends into one or other chamber depending on the as the difference in the pressure in the chambers varies.
5. (acoustics) In a speaker, the thin, semi-rigid membrane which vibrates to produce sound.
6. (optics, photography) A thin opaque structure with a central aperture, used to limit the passage of light into a camera or similar device.
7. (chemistry) A permeable or semipermeable membrane
   • 1921, Wilder Dwight Bancroft, Applied Colloid Chemistry: General Theory^[1], page 207:

     The mass of liquid transported through a porous diaphragm in a given time is directly proportional to the current.

8. (construction) A floor slab, metal wall panel, roof panel or the like, havig a sufficiently large in-plane shear stiffness and sufficient strength to transmit horizontal forces to resisting systems.

Definizione dizionario diaphragm

	diaframma
	anatomy: sheet of muscle separating thorax from abdomen
	mechanics: flexible membrane

membrana

Altri significati:

diaphragm (body)

acoustics: vibrating membrane in a speaker

To act as a diaphragm, for example by vibrating.

(anatomy) Any of various membranes or sheets of muscle or ligament which separate one cavity from another.

An opening in the lightpath of a lens or objective that can regulate the amount of light that passes.

contraceptive device

anatomy: separating membrane or sheet of muscle

optics: structure with a central aperture used to limit the passage of light

optics: to reduce lens aperture

(construction) A floor slab, metal wall panel, roof panel or the like, havig a sufficiently large in-plane shear stiffness and sufficient strength to transmit horizontal forces to resisting systems.

chemistry: permeable or semipermeable membrane

(optics, photography) To reduce lens aperture using an optical diaphragm.

(optics, photography) A thin opaque structure with a central aperture, used to limit the passage of light into a camera or similar device.

(chemistry) A permeable or semipermeable membrane

A contraceptive device consisting of a flexible cup, used to cover the cervix during intercourse.

(anatomy) In mammals, a sheet of muscle separating the thorax from the abdomen, contracted and relaxed in respiration to draw air into and expel air from the lungs; also called thoracic diaphragm.

(acoustics) In a speaker, the thin, semi-rigid membrane which vibrates to produce sound.

(mechanics) A flexible membrane separating two chambers and fixed around its periphery that distends into one or other chamber depending on the as the difference in the pressure in the chambers varies.