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Há 5 dias · Art historian Wu Hung’s history takes a single object type—“a tall glass mirror standing on the floor that can reflect the viewer’s entire body” (p. 7)—and traces its history, via instances and examples, through time and space and across the boundaries between the usually discreet histories of objects, painting, and ...
Há 4 dias · Michelson–Morley type experiments have been repeated many times with steadily increasing sensitivity. These include experiments from 1902 to 1905, and a series of experiments in the 1920s. More recently, in 2009, optical resonator experiments confirmed the absence of any aether wind at the 10 −17 level.
5 de mai. de 2024 · Getting bored of your old Occupy Central board game? Who isn’t! Don’t fret though politically-minded idle people, as there’s a new kid on the block. Check out this rather educational offering from Hong Kong artist Siumup Chow, who uses his cutesy illustrations and a "Snakes & Ladders" setup to take…
7 de mai. de 2024 · Mirror, any polished surface that diverts a ray of light according to the law of reflection. The typical mirror is a sheet of glass that is coated on its back with aluminum or silver that produces images by reflection. The mirrors used in Greco-Roman antiquity and throughout the European Middle.
- The Editors of Encyclopaedia Britannica
Há 22 horas · This process includes a series of coatings, such as tin chloride, silver, copper, and a chemical activator. The mirror is then painted, acid washed, and heat treated to complete the manufacturing process. The modern manufacturing methods ensure the production of high-quality mirrors with excellent reflectivity.
5 de mai. de 2024 · Hong Kong's ongoing and hard fight for democracy post the Umbrella Revolution and Occupy Central protests.
4 de mai. de 2024 · When nylon and steel frame umbrellas appeared in the 1960s and 1970s, the oilpaper umbrella began to die out, and Fuyang's oilpaper umbrella industry stagnated for nearly 20 years. In 1989, the Party secretary of Wen's hometown of Jinzhu village approached Wen and asked him to restart the production of oilpaper umbrellas. Faced with dying ...
