experience described at the beginning of the previous post is called Barking Dog (English barking dog ). A name becomes clear when the opportunity arises to familiarize yourself with the effect of this reaction aukustycznym;)
first saw this experience over five years ago when I was świeżutkim asset Nuakowego Wheels Chemists AMU. U Nas called the experience "pipe" or "pipe Blaise" (due to the vessel in which it is carried out;). Let us again this popisowemu number, but this time version of the pieces performed by students of chemical NKCh UAM;)
The truth that makes an impression? Experience an impressive result, but also very dangerous ... But before some of his perspective, outline, time for a brief history lesson;)
In 1853, carried out its first experience of well-known chemist Justus von Liebig. After a relatively short time, this demonstration has gained fame and Liebigowi opportunity arose to present the Bavarian royal family. But this time, the experience ended in a fiasco, well, disaster! Probably due to air pollution a small amount of NO to NO utleniła 2 , causing an explosion. Teresa Prince Luitpold of Bavaria, and were showered with a hail of glass shards (not, however, suffered major injuries), and he Liebig had more luck than sense, because it saved his life ... snuff box, kept in the pocket of his trousers. With it, a very big piece of glass pierced not his femoral artery. Liebig was the same then deeply shocked by the whole situation, which reflects his written shortly after the incident note:
When I looked around after the explosion pomieszczaniu in which the audience sat and I saw blood flowing down the faces of Queen Theresa and Prince Luitpold, my horror was simply indescribable, I felt half-dead. Fortunately, the event had no further unpleasant consequences. Their value is preserved noble and dignified, their troubles seemed to focus almost only on my person. The Queen she sent to me every night to her personal physician, and every day she asked about my health. Even the King Louis came to me the next day asking if my injuries were serious. When I replied that no, he said out loud: 'So all right as long as nothing is you, the rest does not count ...'
Cdn.
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