bellows-covers
1Bellows — For other uses, see Bellows (disambiguation). Diagram of a fireplace hand bellows. A bellows is a device for delivering pressurized air in a controlled quantity to a controlled location. Basically, a bellows is a deformable container which has an …
2Expansion joint — For the railway specific expansion joints, see Breather switch. Expansion joint on a bridge An expansion joint or movement joint is an assembly designed to safely absorb the heat induced expansion and contraction of various construction materials …
3photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
4wind instrument — /wind/ a musical instrument sounded by the breath or other air current, as the trumpet, trombone, clarinet, or flute. [1575 85] * * * ▪ music Introduction any musical instrument that uses air as the primary vibrating medium for the… …
5keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …
6Camera — 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… …
7Mechanical fan — Household electric box fan with a propeller style blade A mechanical fan is a machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. Usually, it… …
8metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
9Flutina — Infobox Instrument name=Flutina classification=Free reed aerophone range= related= musicians= builders= articles=The flutina is an early precursor to the diatonic button accordion, having one or two rows of treble buttons, which are configured to …
10Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was …
