Glass rod
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Glass in a cylindrical form are sometimes used as stirrers in laboratory envronments.
Glass rods are often used to apply liquids evenly to surfaces. A typical example would be the application of a liquid emulsion to paper in small production alternative photographic processes such as an albumen print. They are used in a similar manner to evenly coat glass surfaces with various liquids for microscopic examination.
Glass as a raw material is also manufactured in cylindrical rod form.
Glass rods rubbed with silk or fur and subsequently shown to attract or repel one another or other materials (such as a hard rubber rod) were used in early demonstrations of electrical energy.
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