efficient machines
21John Popper — Infobox musical artist Name = John Popper Img capt = Background = solo singer Birth name = John Popper Born = birth date and age|1967|3|29 Origin = Cleveland, Ohio Instrument = Vocals, harmonica, guitar Genre = Occupation(s) = musician,… …
22American Axle — Manufacturing, Inc. (commonly called American Axle or AAM) (nyse|AXL), headquartered in Detroit, Michigan, is a manufacturer of automobile driveline, drivetrain, electronic integrated power units and chassis systems, as well as metal formed… …
23Specific speed — Pump Specific Speed is an index that, in mechanical terms, represents the impeller speed of a pump necessary to generate 1 gallon per minute at 1 foot of head.Ns = (n*sqrt(Q)) / (gH^(3/4))Ns = specific speed (unitless)n = pump rotational speed in …
24Moto Morini — Industry Motorcycle Founded 1937 Founder(s) Alfonso Morini Headquarters Bologna, Italy …
25Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
26building 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… …
27technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
28Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
29Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
30computer science — computer scientist. the science that deals with the theory and methods of processing information in digital computers, the design of computer hardware and software, and the applications of computers. [1970 75] * * * Study of computers, their… …
