adjust a diaphragm
21Komodo dragon — taxobox name = Komodo dragonITIS|ID=202168|taxon=Varanus komodoensis|year=2007|date=19 June] status = VU status system = iucn3.1 image width = 256px regnum = Animalia phylum = Chordata classis = Reptilia ordo = Squamata subordo = Scleroglossa… …
22Camera — For other uses, see Camera (disambiguation). Various cameras A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura… …
23Digital single-lens reflex camera — Nikon D700 full frame (FX) digital SLR camera …
24Variable capacitor — Rotary variable capacitor A variable capacitor (also known as a variable air condenser ) is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C… …
25Horn (acoustic) — A horn is a tapered sound guide designed to provide an acoustic impedance match between a sound source and free air. This has the effect of maximising the efficiency with which sound waves from the particular source are transferred to the air.… …
26Canon EF 28-135mm lens — Infobox photographic lenses name = Canon EF 28 135 f/3.5 5.6 IS USM maker = Canon feat is = y feat usm = y feat sbf = n feat macro = y feat special = type = z application = Standard telezoom flength = 28 135 mm fov = 1.0 aperture = f/3.5 5.6 f/36 …
27Gas spring — A gas spring is a type of spring that, unlike a typical metal spring, uses a compressed gas, contained in a cylinder and variably compressed by a piston, to exert a force. Gas springs are used frequently in automobile construction, where they are …
28Miller Reese Hutchison — Born August 6, 1876(1876 08 06) Montrose, Alabama Died February 16, 1944 ( …
29Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… …
30Negative pressure ventilator — This article is about the medical device. For the band, see Iron Lung (band). Negative pressure ventilator Intervention An Emerson iron lung. The patient lies within the chamber, which when sealed provides an effectively oscillating atmospheric… …
