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School supplies [ edit ] Many shops that sell stationery also sell other school supplies for students in primary and secondary education, including pocket calculators , display boards , compasses and protractors , set squares, lunch boxes, and related items.
Before it was introduced, steel was far too expensive to make bridges or the framework for buildings and thus wrought iron had been used throughout the Industrial Revolution. After the introduction of the Bessemer process, steel and wrought iron became similarly priced, and some users, primarily railroads, turned to steel.
Poster for the Holzer Fashion Store, 1902 Police can sometimes put up a poster to let the public know about a criminal. A poster is a large sheet that is placed either on a public space to promote something or on a wall as decoration.
Light: Energy produced by light being absorbed by photoelectric cells, or solar power. Chemical: Energy produced by chemical reaction in a voltaic cell, such as an electric battery. Pressure: Energy produced by compressing or decompressing specific crystals. Magnetism: Energy produced in a conductor that cuts or is cut by magnetic lines of ...
This made steel easier, quicker and cheaper to manufacture, and revolutionised structural engineering. One of the most significant inventors of the Second Industrial Revolution, Bessemer also made at least 128 other inventions in the fields of iron, steel and glass. Unlike many inventors, he managed to bring his own projects to fruition and ...
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Several colors of poster paint. Poster paint (also known as tempera paint in the US, poster color in Asia) is a distemper paint that usually uses starch, cornstarch, cellulose, gum-water or another glue size as its binder. It either comes in large bottles or jars or in a powdered form. It is normally a cheap paint used in school art classes.
The Energy Innovation Center is a multi-disciplinary institution in Pittsburgh, Pennsylvania, United States, that integrates workforce development programs, green technology research laboratories, a business incubator and collaborative university-industry projects.
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