bitumen softening point

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industrial polymers, major — Introduction chemical compounds used in the manufacture of synthetic industrial materials. In the commercial production of plastics, elastomers, man made fibres, adhesives, and surface coatings, a tremendous variety of polymers are… … Universalium
Brunswick black — ▪ varnish quick drying black varnish used for metal, particularly iron, stoves, fenders, and surfaces of indoor equipment. Because of its bitumen content, the coating is highly protective and the finish is attractive and reasonably durable … Universalium
hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… … Universalium
Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 … Wikipedia
photography, history of — Introduction method of recording the image of an object through the action of light, or related radiation, on a light sensitive material. The word, derived from the Greek photos (“light”) and graphein (“to draw”), was first used in the… … Universalium

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