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41Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …
42Facet — Facets are flat faces on geometric shapes. The organization of naturally occurring facets was key to early developments in crystallography, since they reflect the underlying symmetry of the crystal structure. Gemstones commonly have facets cut… …
43Extractor hood — An extractor hood (U.K.) or range hood (U.S.), also known as a kitchen hood, stove hood, exhaust hood, cooker hood, extraction hood, cooking canopy, ventilation hood, extractor fan or electric chimney, is a device containing a fan that hangs… …
44Oerlikon 20 mm cannon — A modern Oerlikon cannon (Oerlikon 20mm/85 KAA) on a Royal Navy warship Type Autocannon Place of origin …
45TCO Certification — is a series of product certifications for office equipment (most notably monitors). It is set by TCO Development, owned by the Swedish Confederation of Professional Employees. The Certifications are named after years. Although commonly associated …
46Carpet sweeper — A carpet sweeper is a mechanical device for the cleaning of carpets in place. They were popular before the vacuum cleaner and have been largely superseded by them.However, some restaurant chains continue to use them (e.g. Perkins) as they are… …
47Toyota Vios — Infobox Automobile name=Toyota Vios manufacturer=Toyota Motor Company production=2003 ndash;present predecessor=Toyota Soluna successor= class=Subcompact car body style=4 door sedan similar=Honda City Nissan Latio related=Toyota Platz/Echo… …
48Heckler & Koch HK21 — Infobox Weapon name=HK21 caption= origin=flag|West Germany type=General purpose machine gun is ranged=yes service= used by=See Users wars= designer=Heckler Koch design date=1961 manufacturer=Heckler Koch production date= number= variants=See… …
49Hayman drum — Hayman drums were introduced in the late 60s, they were made by an English manufacturer. The idea was to come up with a drum series to compete with the success of the large American companies of the time.The shells were thin walled with rings,… …
50Inseam — In tailoring, the inseam is the seam that binds the length of the inner pant leg. The distance from the bottom crotch to the lower ankle is also known as the inseam. The inseam length determines the length of the inner pant leg to appropriately… …
