Google Doodle honours SPL Sorensen who introduced pH scale
New Delhi, May 29 : Google on Tuesday celebrated Danish chemist Soren Peder Lauritz Sorensen who introduced the pH scale to the world with an interactive Doodle.
Sorensen's method of expressing acidity -- the negative logarithm of hydrogen ion concentration (pH) -- still has a wide range of real-world uses.
For example, in agriculture, the pH value can indicate the moisture associated with a soil, which can reveal what crops are suitable for the soil and what adjustments farmers must make to adapt it for growing any other crops.
Born in Havrebjerg in 1868, Sorensen was initially interested in studying medicine at University of Copenhagen. But he eventually spent more time studying chemistry and obtained his PhD in 1899.
Sorensen did most of his research in Carlsberg Laboratories. He became the director of its chemical section in 1901. While at Carlsberg, Sorensen started to study amino acids, proteins and enzymes.
As hydrogen ion concentration played a key role in enzymatic reactions he devised a simple way of expressing it, according to EuCheMS, the European Association for Chemical and Molecular Sciences.
He found that by taking a negative logarithm of hydrogen ion concentration a convenient scale can be established. This is the well-known pH value.
He also developed buffer solutions to maintain constant pH of solutions (Sorensen buffers), EuCheMS noted in a short biography of the scientist in its website.
The Google Doodle on Tuesday allows users to see for themselves the pH value of different food items, including tomatoes and eggs in a scale of 1 to 14.
Sorensen retired from his post at Carlsberg in 1938. He died in Copenhagen in 1939.
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Traffic fraud: Fake 'no-entry' sticker racket busted in Delhi, mastermind among 3 held
New Delhi (PTI): Police here have busted a crime syndicate involved in traffic fraud and extortion, arresting three people including the alleged mastermind who sold fake stickers to help commercial vehicles bypass no-entry restrictions, an official said on Saturday.
The police said they dismantled a third organised syndicate linked to traffic-related frauds, with the arrest of Rinku Rana alias Bhushan, his associate Sonu Sharma and Mukesh Kumar alias Pakodi, who was also connected to another extortion syndicate.
According to the police, Rinku Rana was running a well-organised network that facilitated the movement of commercial goods vehicles during restricted hours by selling fake 'marka' or stickers for Rs 2,000 to Rs 5,000 per vehicle every month. The stickers were falsely projected as authorisation to evade traffic challans.
During raids, the police recovered Rs 31 lakh in cash, property documents worth several crores of rupees, over 500 fake stickers and six mobile phones allegedly used to operate the syndicate.
The crackdown followed a complaint filed by a traffic police officer in April this year after a commercial vehicle tried to evade checking by producing a fake sticker claiming exemption from enforcement action.
Investigation revealed that social media groups were being used to coordinate the illegal movement of vehicles and alert drivers about traffic police checkpoints, police said.
"A parallel system was being run to cheat drivers and vehicle owners while undermining traffic enforcement. On the basis of evidence, provisions related to organised crime under the BNS were invoked," a senior police officer said.
Sonu Sharma, the police said, managed social media groups through which stickers were sold and real-time alerts were circulated regarding traffic police movement. He also acted as a link between Rana and drivers operating in the field.
In a related development, Mukesh Kumar alias Pakodi, an associate of Rajkumar alias Raju Meena, who was earlier arrested under the Maharashtra Control of Organised Crime Act (MCOCA), was also apprehended.
Mukesh allegedly helped extort money from transporters and was involved in blackmailing traffic police personnel by recording enforcement actions, the police said.
Investigators alleged the syndicate led by Rajkumar deployed drivers to deliberately violate traffic rules and secretly record police officials during challans, later using manipulated videos to extort money under threat of false allegations.
The police said that in total, eight accused belonging to three different organised crime syndicates linked to traffic frauds and extortion have been arrested so far.
Further investigation is underway to trace the remaining members, conduct financial probes, and analyse digital evidence recovered during the raids, officials added.
