A man was on the very top diving board of a swimming pool.
He was poised, he lifted his arms, and was about to dive in when the attendant came running up, shouting, “Don’t dive, there’s no water in that pool!”
“That’s all right!” said the man. “I can’t swim!”
Anders CelsiusDied 25 Apr 1744 at age 42 (born 27 Nov 1701).Swedish astronomer who is famous for the temperature scale he developed. Celsius was born in Uppsala where he succeeded his father as professor of astronomy in 1730. It was there also that he built Sweden's first observatory in 1741. He and his assistant Olof Hiortner discovered that aurora borealis influence compass needles. Celsius' fixed scale (often called centigrade scale) for measuring temperature defines zero degrees as the temperature at which water freezes, and 100 degrees as the temperature at which water boils. This scale, an inverted form of Celsius' original design, was adopted as the standard and is still used in almost all scientific work. |
