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Describing the far side of the Moon as "dark" does not mean that it never receives light, but rather that it had never been seen until humans sent spacecraft around the Moon, since the same side of the Moon always faces the Earth due to tidal locking. Black holes have the same gravitational effects as any other equal mass in their place.
Magic lantern slide by Carpenter and Westley. The magic lantern, also known by its Latin name lanterna magica, was an early type of image projector that used pictures—paintings, prints, or photographs —on transparent plates (usually made of glass), one or more lenses, and a light source.
Portal:History of science/Picture/10. An Experiment on a Bird in the Air Pump is a 1768 oil-on-canvas painting by Joseph Wright of Derby which depicts a recreation of one of Robert Boyle 's air pump experiments. It shows the reactions of a group of onlookers to an experiment performed by a natural philosopher in which a bird is deprived of oxygen.
Dazzle camouflage, also known as razzle dazzle (in the U.S.) or dazzle painting, is a family of ship camouflage that was used extensively in World War I, and to a lesser extent in World War II and afterwards. Credited to the British marine artist Norman Wilkinson, though with a rejected prior claim by the zoologist John Graham Kerr, it ...
The spectacle is the inverted image of society in which relations between commodities have supplanted relations between people, in which "passive identification with the spectacle supplants genuine activity". "The spectacle is not a collection of images," Debord writes, "rather, it is a social relation among people, mediated by images."
Up and down the country, people have welcomed the festive season by switching on their Christmas lights.
Before Present ( BP) or " years before present ( YBP )" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date ...
Science in the Renaissance. During the Renaissance, great advances occurred in geography, astronomy, chemistry, physics, mathematics, manufacturing, anatomy and engineering. The collection of ancient scientific texts began in earnest at the start of the 15th century and continued up to the Fall of Constantinople in 1453, and the invention of ...