Gareth Smit writes about the odd objects of the New York Public Library’s Berg Collection, including a lock of Walt Whitman’s hair, Jack …
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Gas lighting is production of artificial light from combustion of a gaseous fuel, such as hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, or …
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A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn ...
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