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| NEWSLETTER - JULY 20 |
| Before you look at today's web page, see if you can answer some of these questions about the events that happened on July 20. 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. |
| Quotations for Today |
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| QUIZ |
| Births |
| Robert D. Maurer, born 20 Jul 1924, is an American research physicist, who with his colleagues, Dr. Donald B. Keck and Dr. Peter Schultz invented the fused silica optical waveguide. What is this used for, and what problem had they solved? |
| Sir Richard Owen, born 20 Jul 1804, was an English anatomist and paleontologist who is remembered for his strong opposition to the views of Charles Darwin. He gave us many of the terms still used today in anatomy and evolutionary biology, including "homology". He also created a word meaning "terrible reptile" (1842) that is well-known today. What is the word he coined for "terrible lizard"? |
| Deaths |
| An Italian inventor (1874-1937) invented the wireless telegraph in 1935 known today as radio. In 1894, he began experimenting on the "Hertzian Waves" (the radio waves Hertz first produced in his laboratory a few years earlier). Lacking support from the Italian Ministry of Posts and Telegraphs, he turned to the British Post Office. Encouraging demonstrations in London and on Salisbury Plain followed. He obtained the world's first patent for a system of wireless telegraphy, in 1897, and opened the world's first radio factory at Chelmsford, England in 1898. In 1900 he took out his famous patent No. 7777 for "tuned or syntonic telegraphy." Can you name this inventor? |
| Events |
| On 20 Jul 1976, an American spacecraft, launched 20 Aug 1975, made its successful, first-ever landing on Mars at Chryse Planitia, and began transmitting pictures. Later, a robot arm that could scoop up samples of material and deposit them into on-board experiments, investigated the hint of life on Mars. Both weathered top soil and deeper soil samples were tested. What was the name of this spacecraft? |
| On 20 Jul of a certain year, Apollo XI astronauts Neil Armstrong and Edwin "Buzz" Aldrin became the first men to walk on the moon, after their lunar module separated from the command module and landed on the lunar surface. Armstrong stepped on the lunar surface at 10:56 ET and proclaimed, "That's one small step for a man, one giant leap for mankind." Nearly 700 million people around the world were tuned in. What year did this event take place - and what was the name of the area where they landed? |
| 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 July 20 web page of Today in Science History. Or, try this link first for just the brief answers. |
| Fast answers for the previous newsletter for July 19: technique of radioimmunoassay (RIA) of peptide hormones; nitrogen; parking meter; I. K. Brunel. |
| Feedback |
| If you enjoy this newsletter, the website, or wish to offer encouragement or ideas, please write. |
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