Sidney J. Harris |
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![]() Quit now, you'll never make it. If you disregard this advice, you'll be halfway there. David Zucker |
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![]() People who ask our advice almost never take it. Yet we should never refuse to give it, upon request, for it often helps us to see our own way more clearly. Brendan Francis |
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![]() The best advisers, helpers and friends, always are not those who tell us how to act in special cases, but who give us, out of themselves, the ardent spirit and desire to act right, and leave us then, even through many blunders, to find out what our own form of right action is. Phillips Brooks |
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![]() I believe God is managing affairs and that He doesn't need any advice from me. With God in charge, I believe everything will work out for the best in the end. So what is there to worry about. Henry Ford |
ev·a·nes·cent
adjective Vanishing or likely to vanish
like vapor. Synonyms transient. --ev"a·nes"cent·ly adv.
The joy and moral stimulation of work no longer
must be forgotten in the mad chase of evanescent profits.
Franklin D.Roosevelt's First Inaugural Address
Definitions from American Heritage Dictionary
Over the next several days the facts here on the DM will be about
Serendipitous Discoveries.
This is the first fact on this subject.
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SERENDIPITY 11 The
first successful photographic process was invented by L. J. M. Daguerre in 1835. Daguerre
made his first photograph using a "camera obscura." This camera was first
described by Leonardo da Vinci in 1519. Daguerre's camera was essentially a box with a
lens in one end and a ground glass plate where the image was focused. This type of camera
was used by many to trace objects and scenes onto thin paper placed over the glass plate.
Daguerre was looking for a way to "fix" the image and make it more permanent. |
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Now Daguerre had to discover what had been responsible for the image
becoming more intense. He decided that one of the chemicals in the cupboard was
responsible. Each day he placed another exposed silver iodide plate in the cupboard and
removed one of the chemicals. This process continued until all of the chemicals had been
removed. To his surprise, after all of the chemicals had been removed the image on the
plate still intensified. What was the cause of the image intensification? He examined the
cupboard and discovered that there was a few drops of mercury on a shelf from a broken
thermometer. He concluded that mercury vapor was the agent responsible for the
intensification of the image. He then proved this hypothesis by experimentation. The
Daguerreotype, and photography was born. Sources: Serendipity | Encyclopaedia Britannica | The New Shell Book of Firsts
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"What sunshine is to flowers, smiles are to humanity. These are but trifles, to be sure; but, scattered along life's pathway, the good they do is inconceivable." Joseph Addison |
TRUE FACT ... Humans begin laughing at two to three months of age. Six year olds laugh about 300 times per day, while adults laugh from 15 to 100 times per day. SOURCE: NYT, Dr. William F. Fry, Stanford University
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Have A Great Day Phillip Bower |
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