The weightlessness experienced by people in space can lead to a number of adverse health effects including nausea, muscle atrophy, and skeletal deterioration. In order to prevent astronauts from developing such health problems, engineers have proposed the development of artificial gravity devices that can simulate gravity in outer space. Theoretically, a rotating spacecraft could produce this sort of gravity inside its hull. How would a ship's rotation exert artificial gravity on an object?
Back in the day
Daylight saving time (DST) is the convention of advancing clocks forward one hour near the start of spring so that afternoons have more daylight and mornings have less. DST was first mentioned in a satirical 1784 article by Ben Franklin that recommended that shops be opened and closed earlier in the day to save on the cost of lighting, and the plan later gained serious momentum with proponents like William Willett in England and Robert Garland in the US. Which two US states do not observe DST?
Born on a day like today
Paz was a Mexican poet and critic, diplomat, and the winner of the 1990 Nobel Prize in Literature. He wrote with a revealing depth of insight, elegance, and erudition that place him among his generation's ablest writers. Among his many works are the Charles Eliot Norton lectures, delivered at Harvard in 1972 and collected under the title Children of the Mire: Modern Poetry from Romanticism to the Avant-Garde. Paz was born in Mexico City during what political event?