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51Reidemeister move — In the mathematical area of knot theory, a Reidemeister move refers to one of three local moves on a link diagram. In 1927, J.W. Alexander and G.B. Briggs, and independently Kurt Reidemeister, demonstrated that two knot diagrams belonging to the… …
52Volvulus — Classification and external resources An xray of a person with a small bowel volvulus. ICD 10 K56.2 …
53Twist per inch — TPI (twists per inch or turns per inch) is a term used in the textile industry. It measures how much twist a yarn has, [Kadolph, Sara J., ed.: Textiles , 10th edition, Pearson/Prentice Hall, 2007, ISBN 0 13 118769 4, p. 197] and can be calculated …
54Malfunction (parachuting) — A malfunction is a partial or total failure of a parachuting device to operate as intended. Malfunctions may require a skydiver to cut away his or her main parachute and deploy the reserve parachute. 1: At about 100 m. reserve canopy suddenly… …
55Cycloheptene — cis Cycloheptene[1] …
566-step — The 6 step is a foundational sequence of breakdance footwork. The b boy uses his arms to support his body above the floor while his legs walk around in a circle.DescriptionThe 6 step is foundational to breakdance not only because it is the first… …
57David D. Burns — is an adjunct professor emeritus in the Department of Psychiatry and Behavioral Sciences at the Stanford University School of Medicine and the author of the best selling book Feeling Good: The New Mood Therapy. Burns popularized cognitive… …
58Elephant intelligence — Elephants are among the world s most intelligent animals. With a mass just over 5kg, elephant brains are larger than those of any other land animal, and although the largest whales have body masses twentyfold those of a typical elephant, whale… …
59Fishing swivel — A fishing swivel is a small device consisting of two rings connected to a pivoting joint. The device is usually made of metal, and the pivoting joint is usually ball or barrel shaped. The line from a rod and reel is tied to one end, and a length… …
60Orientation entanglement — In mathematics and physics, the notion of orientation entanglement is sometimes[1] used to develop intuition relating to the geometry of spinors or alternatively as a concrete realization of the failure of the special orthogonal groups to be… …
