Word: processing
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Dates: during 1930-1930
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...roughly speaking, only half the battle. Much of the noise of planes - some say 50%, some say "most" is caused by the propeller itself.*The Aeronautics Research Division of the Department of Commerce has been studying the problem for two years, is still uncertain as to the exact process by which propeller noise is created. Of the solution, however, it is certain : "The only positive method known of reducing propeller noise is to reduce the tip speed by using a geared propeller." Geared propellers are in use, will be more generally adopted as difficulties of weight and construction are overcome...
...into a little pool leaving behind a light, glistening mass like delicate tissue-paper flowers. The mountaineer, who was a bit of a scientist, heated the residue in water, saw it resume its normal form, laid the foundations for the great agar-agar industry of Japan. The fundamental process has not changed since the mountaineer's discovery...
...assigned to guard a certain section of the town. Many of the "cops" even went so far as to disguise themselves in an attempt to trap unwary students. This method, proving unpopular as well as ineffective, was discarded in favor of a somewhat primitive "honor system", accompanied by a process known as "reading the catalogue". This meant going through the list of students at faculty meetings to see if anybody had "something on" each student...
...trying to follow the general scheme of attack which a team is employing, the process is a bit harder. You will find it necessary to pay attention to the formations as they line up before the ball is put into play. Ordinarily these make but the haziest impression on the casual observer. With the formation in mind, it is not so difficult to forecast where the play is going and to keep an eye out for the way the clearing and running is done. On passes, it is much better to watch the receivers than the passer; you know what...
While many of the visitors expressed skepticism to one another in polite whispers, Georges Claude explained the process to them. Great pumps are used to suck up cold water, 40º F., through a mile-long tube from the bottom of Matanzas Bay. Warm surface water, 80º F., rushes through other pipes into a large vacuum tank. When a liquid is kept under low pressure, it will boil at temperatures much lower than 212º F. The pressure in the vacuum tank, Dr. Claude explained, is low enough to cause the 80º surface water to boil, give...