Παρασκευή 14 Δεκεμβρίου 2012

Newsletter for Friday 14 December

 

Newsletter - December 14 - Today in Science History  

TODAY IN SCIENCE HISTORY
 NEWSLETTER - DECEMBER 14
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.
Tycho & KeplerOn 14 Dec 1546, Tycho Brahe was born, the greatest naked-eye astronomer, whose meticulous data was invaluable to Kepler who formulated fundmental laws of planetary motion. Today's Science Store pick is Tycho & Kepler, by Kitty Ferguson, who profiles Brahe and Kepler, placing them among the political intrigues of their times and the conflict between religion and science.
Yesterday's pick: The Lincoln Highway: Coast to Coast from Times Square to the Golden Gate. For picks from earlier newsletters, see the Today in Science Science Store home page.
Quotations for Today
"Simplicibus itaque verbis gaudet Mathematica Veritas, cum etiam per se simplex sit Veritatis oratio." (So Mathematical Truth prefers simple words since the language of Truth is itself simple.) - Tycho Brahe (born 14 Dec 1546)

"The world is the geologist's great puzzle-box; he stands before it like the child to whom the separate pieces of his puzzle remain a mystery till he detects their relation and sees where they fit, and then his fragments grow at once into a connected picture beneath his hand." (1866) - Louis Agassiz, Swiss-born American naturalist and geologist (died 14 Dec 1873)

"A dead cow or sheep lying in a pasture is recognized as carrion. The same sort of a carcass dressed and hung up in a butcher's stall passes as food." -  John Harvey Kellogg, American physician and health food pioneer (died 14 Dec 1943)
 

QUIZ
Births
Tycho Brahe, born 14 Dec 1546, developed astronomical instruments and made copious measurements fixing the positions of stars, thus paving the way for future discoveries. In 1577, he moved to his own observatory on Hven Island (financed by King Frederick II). In 1599 he moved to Prague, with Kepler as his assistant.
What was Tycho Brahe's nationality?
Deaths
Louis Agassiz (1807-1873) was a Swiss-born U.S. whose teachings made revolutionary contributions to the study of natural science. As a naturalist, he made landmark work on extinct fishes. He is also known as a geologist with landmark work in that field.
What was the field of his landmark work in geology?
Events
On 14 Dec of a certain year, the first synthesis of biologically active DNA in a test tube was announced at a press conference by Arthur Kornberg. He and his colleagues had replicated the relatively simple DNA chain of the Phi X174 virus, which infects bacteria (a bacteriophage). It has a single strand of DNA only about 5500 nucleotide building blocks long, and with about 11 genes.
In which decade was this DNA synthesized?
On 14 Dec 1986, an experimental aircraft piloted by Dick Rutan and Jeana Yeager, took off from Edwards Air Force Base in California on the first non-stop, non-refueled flight around the world.  The aircraft's design and light-weight structural materials allowed it to carry an unprecedented amount of fuel. During its 25,000 mile flight, the aircraft flew at an average speed of 115.8 mph. 
What was the name of this aircraft?
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 December 14 web page of Today in Science History.

Or, try this link first for just the brief answers.
 


Fast answers for the previous newsletter for December 13: Certain Döbereiner triads of elements were arranged in order of increasing atomic mass, the mass of the central member was approximately the average of the other two, and intermediate in chemical properties between the other two elements; magnesium; Thomas Watson; the decade containing the year 1962.
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