One in four thousand people are said to suffer from photosensitive epilepsy, in which flashing computer screens can induce seizures. In 2008 the World Wide Web Consortium determined that online content should not flash more than three times in a one-second period. Federal government websites must design pages that avoid screen flickering within the range of 2 to 55 hertz.
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A 2013 study involving American college students found that participants were more likely to deem a face more attractive if it was presented amid a group of faces than if it was displayed alone. This “cheerleader effect,” scientists ventured, was “due to the averaging out of unattractive idiosyncrasies.” Two years later a similar study conducted with Japanese participants failed to replicate the results of the initial study.
Before Michelangelo’s David was placed in Florence’s Piazza della Signoria in 1504, Leonardo argued the nude sculpture needed “a decent ornament” and sketched it with underpants inked on. David was later fitted with a prim brass girdle sustaining twenty-eight copper leaves. It remained for at least forty years.
Isolated from opium by the German chemist F. W. A. Sertürner around 1804, morphine (named after Morpheus, the Greek god of sleep and dreams) was used to treat opium addicts. Invented by Bayer Pharmaceuticals in 1898, heroin (derived from the Greek word for hero) was used to treat morphine addicts.
In 1863, four years before publishing the first volume of Das Kapital, Karl Marx wrote to Friedrich Engels that apart from “the discoveries of gunpowder, the compass, and the printing press—these necessary preconditions of bourgeois development—the two material bases on which the preparations for machine industry were organized within manufacture...were the clock and the mill.” He elaborated: “The clock is the first automatic machine applied to practical purposes, and the whole theory of production of regular motion was developed on it.”
Georges Cuvier, founder of the field of paleontology, wrote in 1812 that examination of the strata of the earth revealed “traces of revolutions.” He surmised, “Innumerable living beings have been the victims of these catastrophes; some have been destroyed by sudden inundations, others have been laid dry in consequence of the bottom of the seas being instantaneously elevated. Their races have become extinct and have left no memorial of them, except some small fragment which the naturalist can scarcely recognize.”
Slaves in ancient China during the Zhou dynasty were sometimes buried alive with their recently departed masters in order that they might continue to serve them in the afterlife.
The Spinhuis was founded in Amsterdam in 1597 for the purpose of detaining women arrested for adultery, fornication, prostitution, or drunkenness. In addition to being “chastised and betrayed,” inmates were put to work spinning flax and wool.
In 1963, having left bread, butter, and milk for her sleeping children, Sylvia Plath stuck her head inside an oven. In 1974, having turned on her car in a closed garage, waiting for the carbon monoxide to kill her, Anne Sexton sat and drank vodka.
A study of U.S. Supreme Court oral transcripts from 2004 to 2005 tabulated every instance the court reporter described a justice’s remarks provoking laughter. It found that Antonin Scalia had caused seventy-seven such episodes, while Clarence Thomas had caused zero.
According to medieval Egyptian scholar al-Nuwayri, the ancient sages claimed that “when lovers breathe into each other’s faces, their breath mixes with the air,” is inhaled through their noses, and then “reaches the brain, into which it spreads like light in a crystal vessel.”
In the summer of 1867, Chinese laborers working on the Central Pacific Railroad in the Sierra Nevada went on strike, demanding a pay increase and a ten-hour workday. Desperate to resume the railroad’s progress, executives considered asking the Freedmen’s Bureau to send African American laborers to take over. “A Negro labor force would keep the Chinese steady,” one executive wrote, “as the Chinese have kept the Irishmen quiet.”
“Utter damned rot!” is what William Berryman Scott, a former president of the American Philosophical Society, said in response to Alfred Wegener’s theory of continental drift, first proposed in 1912. “Wegener is not seeking the truth,” said a doubtful geologist, “he is advocating a cause and is blind to every argument and fact that tells against it.”
In 1385 Robert Braybroke, bishop of London, recommended excommunication for boys who “play ball inside and outside the church [St. Paul’s Cathedral] and engage in other destructive games there, breaking and greatly damaging the glass windows and the stone images of the church.”
Archaeologists who excavated Pleistocene stone huts in Spanish caves found fossilized cave-lion claw bones. “Our interpretation is that the claws were attached to the skin,” said one researcher. “You know those horrible carpets that people have in their house, the bear carpets with the claws and head? This would be very similar.”