coiled configuration
21building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
22Molecular models of DNA — While this purified DNA precipitated in a water jug (left) appears to be a formless mass, nucleic acids actually possess intricate structure at the nanoscale (right). M …
23Magnet — This article is about objects and devices that produce magnetic fields. For a description of magnetic materials, see magnetism. For other uses, see Magnet (disambiguation) …
24Fairlie locomotive — For other uses of Fairlie, see Fairlie (disambiguation). A Fairlie is a type of articulated steam locomotive that has the driving wheels on bogies. The locomotive may be double ended (a double Fairlie) or single ended (a single Fairlie). Fairlies …
25Alfred Mirsky — Alfred Ezra Mirsky (October 17, 1900–June 19, 1974) was an American pioneer in molecular biology.Mirsky graduated from Harvard College in 1922, after which he studied for two years at the College of Physicians and Surgeons of Columbia University… …
26Modular connector — This article is about modular connectors. For the registered jack (RJ) wiring standard, see registered jack. Left to right, modular connectors: 8P8C plug, 6P6C plug, 6P4C plug, 4P4C plug, 6P6C jack …
27locomotion — /loh keuh moh sheuhn/, n. the act or power of moving from place to place. [1640 50; see LOCOMOTIVE, MOTION] * * * Any of various animal movements that result in progression from one place to another. Locomotion is classified as either… …
28Radiator (engine cooling) — For other uses, see Radiator (disambiguation). A typical engine coolant radiator used in an automobile Radiators are used for cooling internal combustion engines, mainly in automobiles but also in piston engined aircraft, railway locomotives,… …
29DNA — For a non technical introduction to the topic, see Introduction to genetics. For other uses, see DNA (disambiguation). The structure of the DNA double helix. The atoms in the structure are colour coded by element and the detailed structure of two …
30Inductor — An inductor is a passive electrical component designed to provide inductance in a circuit.Inductors store energy in a magnetic field created when an electric current flows through them. They are usually implemented by some sort of coiled… …
