Today is the 161st birth anniversary of German
bacteriologist, Julius Richard Petri. He was born on May 31, 1852 in Barmen and
earned degree in medical science in the year 1876. In his career, Mr
Petri had actively served as military physician till 1882. Moreover, he also
worked at the Imperial Health Office in Berlin as an assistant.
Petri had immensely contributed in the invention and
development of culture dish or Petri plate, a technique to culture bacteria on
agar (a substance made from algae) plates that helped to identify the bacteria
responsible for diseases. In the contemporary times, biologists use the Petri
dish to culture cells. He died on December 20, 1921.
Today's Google doodle features six animated Petri dishes mopped
by a hand to commemorate his birthday. When you hover mouse cursor on the
plates it displays a sock, a door knob, a computer keyboard, a drooling dog, a
plant in the rain and a dish being washed by a sponge.
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