powered approach
81Lotus Seven — Infobox Automobile name = Lotus Seven aka = Lotus 7 manufacturer = Lotus Cars parent company = production = 1957–1972 predecessor = Lotus 6 successor = Caterham 7 class = Sports car platform = Series 1 Series 2 Series 3 Series 4 layout = body… …
82Self-replicating machine — A self replicating machine is an artificial construct that is theoretically capable of autonomously manufacturing a copy of itself using raw materials taken from its environment. The concept of self replicating machines has been advanced and… …
83Valve audio amplifier - technical — Circuitry and performance Characteristics of valves Valves are very high input impedance (near infinite in most circuits) and high output impedance devices. They are also high voltage / low current devices.While valves themselves are described… …
84Avro Canada CF-105 Arrow — CF 105 Arrow Photo from the Canadian Department of National Defence Role Interceptor …
85Crossgate AG — Type Aktiengesellschaft Industry B2B integration, B2B transaction network, automation of business process, supply chain management, e Invoicing, Industry specific knowledge (automotive, trade, consumer products, technology, pharmaceutical …
86Wankel engine — The Wankel engine is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four stroke cycle is generally generated in a space between the inside of… …
87Economic growth — GDP real growth rates, 1990–1998 and 1990–2006, in selected countries …
88Mars Science Laboratory — mission 2011 concept artwork Operator NASA Major contractors Boeing Lockheed Martin …
89Nanocrystal solar cell — Nanocrystal solar cells are solar cells based on a substrate with a coating of nanocrystals. The nanocrystals are typically based on silicon, CdTe or CIGS and the substrates are generally silicon or various organic conductors. Quantum dot solar… …
90Multijunction photovoltaic cell — Multi junction solar cells or tandem cells are solar cells containing several p n junctions. Each junction is tuned to a different wavelength of light, reducing one of the largest inherent sources of losses, and thereby increasing efficiency.… …
