spiral sweep
41Medical ultrasonography — This article is about using ultrasound to image the human body. For imaging of animals in research, see Preclinical imaging. Sonography redirects here. For the tactile alphabet called sonography , see Night writing. Medical ultrasonography… …
42Control line — Brodak Control Line Aerobatic Strega in flight Control line (also called U Control ) is a simple and light way of controlling a flying model aircraft. The aircraft is connected to the operator by a pair of lines, attached to a handle, that work… …
43Ultralight trike — An ultralight trike, also known as a flex wing trike, weight shift control aircraft, microlight trike, deltatrike[1] or motorized deltaplane,[2] is a type of powered hang glider using a high performance Rogallo wing coupled to a propeller powered …
44Mirai Nagasu — Nagasu at the 2010 Trophée Eric Bompard. Personal information Full name Mirai Aileen Nagasu Country represented …
45Edward Upward — Infobox Person image size = 150px name = Edward Upward caption = birth date = birth date and age|1903|9|9 birth place = Romford, England death date = death place = occupation = NovelistEdward Falaise Upward (born September 9, 1903) is a British… …
46Saga of Seven Suns — Infobox Book name = The Saga of Seven Suns author = Kevin J. Anderson country = United States language = English genre = Sci fi, Space Opera publisher = flagicon|UK Simon Schuster flagicon|USA Orbit Books release date = July 2002 – July 2008… …
47Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …
48Operation Bolo — Part of Vietnam War 8th TFW F 4C Phantom II on static display at Pacific Coast Air Museum …
49Newton's theorem of revolving orbits — Figure 1: An attractive force F(r) causes the blue planet to move on the cyan circle. The green planet moves three times faster and thus requires a stronger centripetal force, which is supplied by adding an attractive inverse cube force. The …
50Annelid — Temporal range: Early Ordovician–Recent[1] …
