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Air-activated hand warmers contain cellulose, iron powder, activated carbon, vermiculite (which holds water) and salt. They produce heat from the exothermic oxidation of iron when exposed to air . [ 5 ] [ 6 ] The oxygen molecules in the air, together with the water, react with iron, forming rust (which is a hydrated oxide of iron).
Salamander heaters date back to at least 1915. In the early 1940s, W.L. Scheu of Scheu Manufacturing Company, a producer of temporary portable space heating equipment, developed the modern salamander heater to provide warmth to allow construction crews to work in inclement weather. Sales spread across the US, and by the 1950s, to Europe.
The Dunlop carbon brakes as used on the Concorde airliner. The brake disc of this Ferrari race car's braking system is made from carbon fibre-reinforced silicon carbide which is a CMC rather than a C/C. Carbon fibre-reinforced silicon carbide (C/SiC) is a development of pure carbon–carbon that uses silicon carbide with carbon fibre.
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By moving the fuel tank and modifying the rear suspension, seating capacity was increased from 39 to 42 (on the 40-foot model), with more forward-facing seats. To improve accessibility , the floor height was lowered to 14 inches (360 mm) with the ability to kneel down to 10 inches (250 mm), and the front entry door was widened, allowing a wider ...
The Concord coach was an American horse-drawn coach, often used as stagecoaches, mailcoaches, and hotel coaches. The term was first used for the coaches built by coach-builder J. Stephen Abbot and wheelwright Lewis Downing of the Abbot-Downing Company in Concord, New Hampshire , but later to be sometimes used generically.
This is because carbon fiber has the highest strength-to-density ratio of any current fiber and titanium has the highest strength-to-density ratio of any current metal. As a result, carbotanium can withstand temperatures up to 315 °C. [2] The material properties of carbotanium are a mixture of those of a titanium alloy and a carbon fiber.
The AMC Concord is a compact car manufactured and marketed by the American Motors Corporation for model years 1978 through 1983. The Concord was essentially a revision of the AMC Hornet that was discontinued after 1977, but better equipped, quieter, and smoother-riding than the series it replaced. [1]