Παρασκευή 27 Ιουλίου 2012

Newsletter for Friday 27 July

 

Newsletter - July 27 - Today in Science History  


TODAY IN SCIENCE HISTORY
 NEWSLETTER - JULY 27
Before you look at today's web page, see if you can answer some of these questions about the events that happened on July 27. 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
Hans Fischer was a German biochemist, born 27 Jul 1881, who was awarded the Nobel Prize for Chemistry in 1930 for research into  the red blood pigment, and chlorophyll, the green pigment in plants. He further showed that they share a similar structure, but with subtle differences 
What is the red blood pigment?
Bertram Borden Boltwood, born 27 Jul 1870, was an American chemist and physicist whose work on the radioactive decay of uranium and thorium was important in the development of the theory of isotopes. Boltwood studied the "radioactive series" whereby radioactive elements sequentially decay into other isotopes or elements. 
What was the stable end product of these decay series?
Deaths
An English meteorologist (1766-1844) switched to chemistry when he saw the applications for chemistry of his ideas about the atmosphere. He proposed the Atomic Theory in 1803 in which he inferred proportions of elements in compounds by taking ratios of the weights of reactants. He set the atomic weight of hydrogen to be identically equal to one and developed the table of atomic weights for the other elements. Hence he is known as one of the fathers of modern physical science. 
Can you name this man?
Events
On 27 Jul In 1921, Canadians Sir Frederick Banting and Charles Best succeeded in the isolation of the anti-diabetic component of the pancreas. 
What was the substance they isolated?
On 27 Jul of a certain year, the first electric automobile, designed by Philip W. Pratt, was demonstrated in Boston, a tricycle powered by six Electrical Accumulator Company cells, weighing 90 pounds. 
In what decade was this first electric automobile displayed?
On 27 Jul 1866, Cyrus W. Field finally succeeded, after two failures, in laying the first underwater telegraph cable. It was 1,686 miles long, and laid by the Great Eastern, the largest ship then afloat. 
Where was this first cable laid?
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 27 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 26: One would rotate light passed through it polarized in a clockwise fashion, and the other form would do so counterclockwise; Carl Jung; mathematics; 46 pounds .
 
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