http://www.scientificamerican.com https://static.scientificamerican.com/sciam/assets/Image/newsletter/salogo.pnghttp://www.scientificamerican.com Thu, 07 Mar 2024 20:05:01 GMT en-us Scientific American, a Division of Springer Nature America, Inc. Scientific American multimedia@sciam.com https://www.scientificamerican.com/article/march-2024-science-history-from-50-100-and-150-years-ago/ CBB05C38-6FA5-4523-AA1872CE31C41F09 Fri, 01 Mar 2024 14:00:00 GMT <p>Hashish addiction; a pension for Madame Curie</p> <p>Hashish addiction; a pension for Madame Curie</p> 1974, Planet Data: Mercury's gravity is 0.38 that of Earth's. Jupiter's mass is about 318 Earths. One Neptune revolution around the sun takes 165 Earth years. Venus rotates in a direction opposite to that of Earth.]]> Scientific American, Vol. 230, No. 3; March 1974]]> Mark Fischetti50, 100 & 150 Years AgoSocial SciencesHistory https://www.scientificamerican.com/article/february-2024-science-history-from-50-100-and-150-years-ago/ BD652470-F251-4CE8-AA6F08ADBA8CED39 Thu, 01 Feb 2024 14:00:00 GMT Wed, 21 Feb 2024 18:43:43 GMT <p>Curious dinosaur eggs discovered; element 72 named</p> <p>Curious dinosaur eggs discovered; element 72 named</p> 1974, Comet Explained: “Ion and dust tails are created by two processes. First, high-energy electrons in the solar wind ionize the molecules in the coma of the comet, stripping them of electrons and leaving them positively charged. Second, the solar wind gives rise to a bow wave around the coma; chaotic magnetic fields within the solar wind selectively carry the ionized molecules away from the coma at high speeds.”]]> Scientific American, Vol. 230, No. 2; February 1974]]> Mark Fischetti50, 100 & 150 Years AgoSocial SciencesHistory https://www.scientificamerican.com/article/january-2024-science-history-from-50-100-and-150-years-ago/ E16C4531-9AD7-4025-A07EB61728CE234F Mon, 01 Jan 2024 14:00:00 GMT Wed, 21 Feb 2024 18:39:41 GMT <p>Sleep potion; top speed limits</p> <p>Sleep potion; top speed limits</p> 1974, Retina Trick: “Figure at top left can look like a person's head with a chef's hat or, when rotated 90 degrees, like a dog (bottom left). Figures at right can look like a bearded man's head or a U.S. map. When people tilted their head 90 degrees (shown by arrow) to view, they preferentially recognized the figure that was upright in the environment instead of the figure that was upright on the retina.”]]> Scientific American, Vol. 230, No. 1; January 1974]]> Mark Fischetti50, 100 & 150 Years AgoSocial SciencesHistory