Download e-book for kindle: A Short History of Chemistry by Isaac Asimov

January 31, 2018 | General Reference | By admin | 0 Comments

By Isaac Asimov

ISBN-10: 0385036736

ISBN-13: 9780385036733

From using metals via prehistoric guy to the alchemical experiments of medieval and renaissance guy to the complicated chemical abilities of latest guy, Asimov lines the improvement of this development block of our technological global.

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Download e-book for kindle: A Short History of Chemistry by Isaac Asimov

From using metals by way of prehistoric guy to the alchemical experiments of medieval and renaissance guy to the advanced chemical abilities of up to date guy, Asimov lines the improvement of this development block of our technological global.

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New York Stress Tabs is a case in point. ” What magical ingredients does it contain? Aconite, which is the poison that Romeo and Juliet imbibed, as well as strychnine. Delightful! But don't worry, these ingredients are present in “homeopathic doses,” which means that their concentration is roughly zero. 23. How does a radiometer work? —— You've seen this little device. It looks like a lightbulb with a weather vane inside it. Hold it up to a light source, and the weather vane spins. The radiometer can be found in any science shop, and it's been amusing people of all ages for over a hundred years.

The earwig was a pregnant female; she laid her eggs inside the patient's head, and now freshly hatched earwigs are devouring her brain! An urban legend, of course. Earwigs may occasionally crawl into ears, but they most assuredly do not bore into brains. Sometimes, however, truth is stranger than fiction. A Greek physician had a visit from a patient who developed a strange sensation in her ear while on a motorcycle ride. The physician was shocked to see, inside her ear, a spider's web with a spider ensconced in it, apparently comfortable in its warm surroundings.

And “captive” is the appropriate expression, because studies have shown that more than 90 percent of the original blowing agent is still present in a refrigerator fifteen years after it has been discarded. Unless special methods are employed, the blowing agent is released into the atmosphere when such fridges are recycled for their metal content. Shredding the fridge into small pieces in an airtight chamber allows for recovery of CFCs. This technique is expensive, but it can have huge environmental benefits.

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A Short History of Chemistry by Isaac Asimov


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