Discovery by accident

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Dimpy Handa
Most important Discoveries or Creations are Accidental.It is usually while seeking the answer to one question that we come across the answer to another. Could you name out some accidental but important discoveries?
 
Discoveries may be accidental but we are forgetting the fact that making a discovery is just a start. In fact most of the times the discovery in its initial phase is just a 'phenomemnon' that takes place.
One of the important accidental discovery is of tyres.
 
In 1928, Scottish Scientist Sir Alexander Fleming was studying Staphylococcus – the bacteria that causes food poisoning. He turned up at work one day and discovered a blue-green mould that seemed to be inhibiting growth of the bacteria. He grew a pure culture of the mould and discovered that it was a Penicillium mould. After further experiments, Fleming was convinced that penicillin could not last long enough in the human body to kill pathogenic bacteria, and stopped studying it after 1931, but restarted some clinical trials in 1934 and continued to try to get someone to purify it until 1940. The development of penicillin for use as a medicine is attributed to the Australian Nobel Laureate Howard Walter Florey – he shared the Nobel Prize with Fleming and Ernst Boris Chain.
 
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