Carbon paper consists of sheets of paper that create one or more copies simultaneously with the creation of an original document when inscribed by a typewriter or ballpoint pen. The email term cc which means ‘carbon copy’ is derived from carbon paper.
A sheet of carbon paper, with the coating side down
Handwriting duplicated through carbon paper
Waxes are a diverse class of organic compounds that are lipophilic, malleable solids near ambient temperatures. They include higher alkanes and lipids, typically with melting points above about 40 °C (104 °F), melting to give low viscosity liquids. Waxes are insoluble in water but soluble in nonpolar organic solvents such as hexane, benzene and chloroform. Natural waxes of different types are produced by plants and animals and occur in petroleum.
Commercial honeycomb foundation, made by pressing beeswax between patterned metal rollers.
Ceroline brand wax for floors and furniture, first half of 20th century. From the Museo del Objeto del Objeto collection
Wax candle.
A wax coating makes this Manila hemp waterproof