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Google honours founder of pH scale SPL Sorensen with an interactive doodle
Google doodle today honours the founder of the pH scale SPL Sorensen with an interactive doodle depicting the second 'o' of the logo as the start button circumvented by the colours of the pH strip.

Around it six objects of daily life have been shown indicating the pH value position on the circular strip. On clicking the start button the interactive doodle unfolds.

The interactive doodle shows one or the other substances and one has to arrange them according to their pH value and if you guess wrong, the cartoon figure of Sorensen will shake his head asking you to try again.

SPL Sorensen (9 January 1868 – 12 February 1939) was a Danish chemist, famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity. He was born in Havrebjerg, Denmark, informs Wikipedia.

He worked as head of the prestigious Carlsberg Laboratory, Copenhagen and carried out studies on the effect of ion concentration on proteins. 

Keeping in view the concentration of hydrogen ions in chemicals, he introduced the pH-scale as a simple way of expressing the measure of acidity or alkalinity of the substances. The pH scale goes from 0-14 and neutral substances have pH value of 7.

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