rubber insulation
81Air well (condenser) — High mass air well of Belgian engineer Achile Knapen in Trans en Provence …
82Third rail — For other uses, see Third rail (disambiguation). Third rail at the West Falls Church Metro station near Washington, D.C., electrified at 750 volts. The third rail is at the top of the image, with a white canopy above it. The two lower rails… …
83Port Dalhousie, Ontario — Port Dalhousie is a community in St. Catharines, Ontario, Canada. It is known for its waterfront appeal. It is also home to the Royal Canadian Henley Regatta and is historically significant as the terminus for the first three (19th century)… …
84Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
85recycling — or materials salvage Recovery and reuse of materials from consumed products. The main motives for recycling have been the increasing scarcity and cost of natural resources (including oil, gas, coal, mineral ores, and trees) and the pollution of… …
86Submarine communications cable — A cross section of a submarine communications cable. 1 Polyethylene 2 Mylar tape 3 Stranded steel wires 4 Aluminium water barrier 5 Polycarbonate 6 Copper or aluminium tube 7 Petroleum jelly 8 Optical fib …
87Properties and applications of commercially important elastomers, Table — ▪ Table Table 1: Properties and Applications of Commercially Important Elastomers Polymer type glass transition temperature (° C) melting tem perature (° C) heat resistance* oil resistance* flex resistance* typical products… …
88Door — For other uses, see Door (disambiguation). A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation… …
89Foam — This article is about the substance formed from trapped gas bubbles. For other uses, see Foam (disambiguation). Soap foam bubbles Contents 1 Definition …
90Gas compressor — A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are… …
