removable without much difficulty
51B-47 Stratojet — Infobox Aircraft name=B 47 Stratojet type=Strategic bomber manufacturer=Boeing caption=Boeing B 47E 65 BW (AF Serial No. 51 5257) during rocket assisted takeoff test. designer= first flight=17 December 1947 introduced=June 1951 retired=1966, B… …
52AC power plugs and sockets — See also: Industrial and multiphase power plugs and sockets Plugs and sockets may sometimes combine male and female contacts, but t …
53Dental braces — (also known as orthodontic braces, or simply braces) are devices used in the orthodontic industry that help align and straighten teeth and help to position them with regard to a person’s bite, while also working to improve dental health. They are …
54Cardinal Vicar — ( it. Cardinale Vicario) is a title commonly given to the vicar general of the diocese of Rome for the portion of the diocese within Italy. The official title, as given in the Annuario Pontificio (under the heading Vicariate of Rome ), is Vicar… …
55Cardinal Vicar — • The vicar general of the pope, as Bishop of Rome, for the spiritual administration of the city, and its surrounding district, properly known as Vicarius Urbis Catholic Encyclopedia. Kevin Knight. 2006. Cardinal Vicar Cardinal V …
56Hi-MD — In January 2004, Sony announced the Hi MD media storage format as a further development of the MiniDisc Format. [ [http://news.sel.sony.com/en/press room/consumer/portable audio/walkman players/release/8720.html Sony Introduces Hi MD press… …
57Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …
58Parthenon — Not to be confused with Pantheon, Rome. For other uses, see Parthenon (disambiguation). Coordinates: 37°58′13″N 23°43′21″E / 37.97025°N 23.72247°E …
59Knoppix — Infobox OS name = Knoppix caption = Knoppix 5.3.1 with KDE developer = Klaus Knopper family = Linux source model = Open source working state = Current latest release version = 5.3.1 latest release date = release date|2008|03|27 language = German… …
60Ford Straight-6 engine — Straight 6 Manufacturer Ford Motor Company Production 1941 1996 (US) 1960 present (AUS) 1961 1991 (ARG) …
