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| NEWSLETTER - SEPTEMBER 18 | |
| Before you look at today's web page, see if you can answer some of these questions about the events that happened on this day. Some of the names are very familiar. Others will likely stump you. Tickle your curiosity with these questions, then check your answers on today's web page. | |
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| Quotations for Today | |
| "Science gains from it (the pendulum) more than one can expect. With its huge dimensions, the apparatus presents qualities that one would try in vain to communicate by constructing it on a small (scale), no matte how carefully. One collects numbers that, compared with the predictions of theory, permit one to appreciate how far the true pendulum approximates or differes from the abstract systems called 'the simple pendulum'." - Jean Bernard Léon Foucault, French physicist, whose Foucault Pendulum experimentally proved that the Earth rotates on its axis (born 18 Sep 1819) "All the truths of mathematics are linked to each other, and all means of discovering them are equally admissible." - Adrien-Marie Legendre, French mathematician (born 18 Sep 1752) "For since the fabric of the universe is most perfect and the work of a most wise creator, nothing at all takes place in the universe in which some rule of the the maximum or minimum does not appear." - Leonhard Euler, Swiss mathematician (died 18 Sep 1783) | |
| QUIZ | |
| Births | |
| Edwin Mattison McMillan, born 18 Sep 1907, was an American nuclear physicist who shared the Nobel Prize for Chemistry in 1951 with Glenn T. Seaborg for his discovery of element 93, the first element heavier than uranium, thus called a transuranium element. What name was given to this element ? | |
| John Aitken, born 18 Sep 1839, was a Scottish physicist and meteorologist who is remembered for his explanation of a meterological phenomenon based on Aitken nuclei. What are Aitken nuclei - and what do they cause? | |
| Deaths | |
| The English physicist, Sir John Cockcroft (1897-1967) was joint winner with Ernest T.S. Walton of Ireland of the 1951 Nobel Prize for Physics. Together, they built the Cockcroft-Walton generator. What was the function of their generator? | |
| A French physicist (1819-1896) was the first to measure the speed of light successfully without using astronomical calculations (1849). His apparatus used a narrow beam of light sent between gear teeth on the edge of a rotating wheel. Can you name this scientist? | |
| Events | |
| On 18 Sep of a certain year, Cuban cosmonaut Arnaldo Tamayo-Mendéz became the first person of color and the first Latin American sent into space on board Soyuz 38 (for 188.7 hours), one of a two men comprising the seventh international crew under the Intercosmos programme. Tamayo-Mendéz spent several days aboard the Soviet space laboratory Salyut 6. During which decade did this event occur? | |
| Answers | |
| When you have your answers ready to all the questions above, you'll find all the information to check them, and more, on the September 18 web page of Today in Science History. Or, try this link first for just the brief answers. | |
| Fast answers for the previous newsletter for September 17: Bernhard Riemann; Jean Piaget; he invented the negative-positive photographic process - to produce a positive picture of which he was able to make further copies; mercury vapour lamp | |
| Feedback | |
| If you enjoy this newsletter, the website, or wish to offer encouragement or ideas, please write. |
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