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51Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …
52Heckler & Koch USP — Type Pistol Place of origin …
53Shotgun — For other uses, see Shotgun (disambiguation). A pump action Remington 870, two semi automatic …
54Operant conditioning — is a form of psychological learning during which an individual modifies the occurrence and form of its own behavior due to the association of the behavior with a stimulus. Operant conditioning is distinguished from classical conditioning (also… …
55Al-Jazari — Abū al Iz Ibn Ismā īl ibn al Razāz al Jazarī (1136 1206) ( ar. أَبُو اَلْعِزِ بْنُ إسْماعِيلِ بْنُ الرِّزاز الجزري) was an important Arab [citation|title=Archimedes Weapons of War and Leonardo|first=D. L.|last=Simms|journal=The British Journal… …
56Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …
57TAM Airlines Flight 3054 — ] Crew=6cite web|title=Nota da TAM retifica informação e diz que Airbus 320 levava 176 pessoas |url=http://www.agenciabrasil.gov.br/noticias/2007/07/17/materia.2007 07 17.3821074797/view|publisher=Agência Brasil|date=2007 07 17|accessdate=2007 07 …
58Su Song — 蘇頌 (Sū Sòng) Born 1020 near Quanzhou Died 1101 (aged 80–81) Nationality Chinese …
59Animal psychopathology — is the study of mental or behavioral disorders in non human animals.Historically, there has been an anthropocentric tendency to emphasize the study of animal psychopathologies as models for human mental illnesses [Owen, J. B., Treasure, J.L.… …
60List of Marvel Family enemies — Through his adventures, Fawcett Comics/DC Comics superhero Captain Marvel and his Marvel Family gained a host of enemies, including the following: Contents 1 Acrobat 2 Adolf Hitler 3 Amoeba Family …
