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Science Birthdays, February 24

Today is the birthday of Pyotr Nikolaevich Lebedev, born in 1866, he was the first to measure the pressure of light on a solid body in his experimental studies of electromagnetic waves, this discovery, announced at the World Physics Congress in 1900 became the first quantitative confirmation of Maxwell’s theory of electromagnetism.

Karl Graebe, born in 1841introduced the terms ortho, meta and para to organic chemistry. He died in 1927 at the age of 86.

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Dog Tip of The Day, February 24

The average adult dog sleeps about 12 to 14 hours a day.

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Natural Disasters, February 23

1887    2000 people were killed in an earthquake that hit the French Riviera

1917    Southeast Tornado Outbreak, 17 people killed.

1998    Tornadoes in central Florida kill 42 people and destroy 2600 structures.

1999    An Avalanche in the Austrian village of Galtur killed 31 people.

2016    Tornado Outbreak around Louisiana, overall there were 7 fatalities from this outbreak which lasted two days.

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Dog Tip of The Day, February 23

A dog should spend between ½ hour and 2 hours of activity per day, Hunting, herding and working breeds need the most exercise. It depends on the breed, size and overall health of the dog. Of course as dogs age, they require less exercise, but it is still important.

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Science Birthdays, February 22

2/22/1796        Lambert Quetelet        astronomer      pronounced (ket lay), He also worked on statistical measurements and found that chest measurements and heights of soldiers varied the same way as bullet holes about a bullseye, and the toss of dice. This produced a bell curve. From this he arrived at the average man. He died in 1874 at age 78.

2/22/1824        Pierre Janssen              astronomer      He discovered a spectral line that led to the discovery of helium. He published an atlas of photographs of the sun. He died in 1907 at age 83.

2/22/1857        Rudolf Heinrich Hertz                        physicist          student of Helmholtz and Kirchoff. Studied electromagnetic waves but never saw the radio or the structure of the atom.  He died at age 36.  Chronic blood poisoning

2/22/1879        Johannes Bronsted      chemist            acid base theory of opposites.  He died in 1947 at age 68.

2/22/1962        Steve Irwin

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Science Birthdays, February 21

August Wasserman, born in 1866, he worked under Robert Koch, developed a diagnostic test for syphilis still known as the Wasserman test. He died in 1925 at age 59.

Carl Dam, born in 1895, he was a chemist who studied under Pregel, he studied the synthesis of cholesterol in hens and also hypothesized vitamin K as a coagulation factor, it stands for Koagulation, the German spelling.

Rene Dubos, born in 1901 he was a biologist and microbiologist whose research led to discoveries of antibiotics.

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Natural Disasters, February 22

1651 St. Peter’s Flood: A storm surge floods the Frisian coast, drowning 15,000 people.
2005 Zarand earthquake, a 6.4 Mw earthquake shook the Kerman Province of Iran with a maximum Mercalli intensity of VIII which is Severe, leaving 612 people dead.
2011 New Zealand’s second deadliest earthquake struck Christchurch killing 185 people.
2015 A ferry carrying 100 passengers capsized on the Padma River in Bangladesh killing 70 people.

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