standard shape (size)
41Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …
4235 mm film — is the basic film gauge most commonly used for both still photography and motion pictures, and remains relatively unchanged since its introduction in 1892 by William Dickson and Thomas Edison, using film stock supplied by George Eastman. The… …
43Keg — This article is about the metal container. For the drum, see music of the Virgin Islands. For beer which is served from a pressurized keg, see Keg beer. 50 liter DIN keg, cutaway A keg is a small barrel. Traditionally, a wooden keg is made by a… …
44architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
45Handloading — or reloading is the process of loading firearm cartridges or shotgun shells by assembling the individual components (case/shotshell, primer, powder, and bullet/shot), rather than purchasing completely assembled, factory loaded cartridges.… …
46Currency of Spanish America — This article provides an outline of the currency of Spanish America (las Indias, the Indies) from Spanish colonization in the 15th century until Spanish American independencies in the 19th. This great realm was divided into the Viceroyalty of New …
47Melanoma — Classification and external resources A melanoma ICD 10 C43 …
48atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
49Shotgun — For other uses, see Shotgun (disambiguation). A pump action Remington 870, two semi automatic …
50Activated carbon — Activated carbon, also called activated charcoal, activated coal or carbo activatus, is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions …
