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1230000207980 - Ray Stannard Baker: Boys' Second Book of Inventions (Illustrated) - کتاب

(?):

Boys' Second Book of Inventions (Illustrated) (2014) (?)

حوالگی سے: جرمنینئی کتابای بُک، ای بک، ڈیجیٹل کتابڈیجیٹل ڈاؤن لوڈ، اتارنا کے لئے مصنوعات
EAN:

1230000207980 (?)

, نامعلوم زبان, Lost Leaf Publications, Lost Leaf Publications, Lost Leaf Publications, نیا, ای بُک, ڈیجیٹل ڈاؤن لوڈ، اتارنا
No substance ever discovered better deserves the term "Miracle of Science," given it by a famous English experimenter, than radium. Here is a little pinch of white powder that looks much like common table salt. It is one of many similar pinches sealed in little glass tubes and owned by Professor Curie, of Paris. If you should find one of these little tubes in the street you would think it hardly worth carrying away, and yet many a one of them could not be bought for a small fortune. For all the radium in the world to-day could be heaped on a single table-spoon; a pound of it would be worth nearly a million dollars, or more than three thousand times its weight in pure gold. Professor and Madame Curie, who discovered radium, now possess the largest amount of any one, but there are small quantities in the hands of English and German scientists, and perhaps a dozen specimens in America, one owned by the American Museum of Natural History and several by Mr. W.J. Hammer, of New York, who was the first American to experiment with the rare and precious substance. M. Curie Explaining the Wonders of Radium at the Sorbonne. And perhaps it is just as well, at first, not to have too much radium, for besides being wonderful it is also dangerous. If a pound or two could be gathered in a mass it would kill every one who came within its influence. People might go up and even handle the white powder without at the moment feeling any ill-effects, but in a week or two the mysterious and dreadful radium influence would begin to take effect. Slowly the victim's skin would peel off, his body would become one great sore, he would fall blind, and finally die of paralysis and congestion of the spinal cord. Even the small quantities now in hand have severely burned the experimenters. Professor Curie himself has a number of bad scars on his hands and arms due to ulcers caused by handling radium. And Professor Becquerel, in journeying to London, carried in his waistcoat pocket a small tube of
زیادہ…
زمرہ: Science & Nature
کلیدی الفاظ: Boys' Second Book of Inventions (Illustrated) Ray Stannard Baker Science Science & Nature 1230000207980
سے کوائف 07/01/2017 03:02h

1230000207980

تمام دستیاب کتابوں کے لیے اپنے ٹیلی فون نمبر تلاش کریں 1230000207980 کی قیمتوں میں تیزی اور آسانی سے موازنہ کریں اور فوری طور پر آرڈر ۔

دستیاب نایاب کتابیں، استعمال شدہ کتابیں اور دوسرا ہاتھ کتب کے عنوان "Boys' Second Book of Inventions (Illustrated)" سے Ray Stannard Baker مکمل طور پر درج ہیں ۔

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