What goes up and down the stai...
[2338] What goes up and down the stai... - What goes up and down the stairs without moving? - #brainteasers #riddles - Correct Answers: 41 - The first user who solved this task is Djordje Timotijevic
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What goes up and down the stai...

What goes up and down the stairs without moving?
Correct answers: 41
The first user who solved this task is Djordje Timotijevic.
#brainteasers #riddles
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Dating

The mother of a 17-year-old girl was concerned that her daughter was having sex.
Worried the girl might become pregnant and adversely impact the family's status, she consulted the family doctor. The doctor told her that teenagers today were very willful and any attempt to stop the girl would probably result in rebellion. He then told her to arrange for her daughter to be put on birth control and until then, talk to her and give her a box of condoms.
Later that evening, as her daughter was preparing for a date, the woman told her about the situation and handed her a box of condoms.
The girl burst out laughing and reached over to hug her mother saying:
"Oh Mom! You don't have to worry about that! I'm dating Susan!"             

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Arne Tiselius

Died 29 Oct 1971 at age 69 (born 10 Aug 1902). Arne Wilhelm Kaurin Tiselius was a Swedish biochemist who won the Nobel Prize for Chemistry in 1948 for his work on electrophoresis and other new methods of separating and detecting colloids and serum proteins. In electrophoresis - a method of separating chemically similar charged colloids - an electrical field is applied to the sample, and particles with different sizes migrate at different rates to the pole of opposite charge, enabling them to be detected and identified. Using the technique on blood serum Tiselius confirmed the existence of four different groups of proteins - albumins and alpha, beta, and gamma globulins. Tiselius also conducted work on chromatography (from 1940) and partition and gel filtration (from the late 1950s).
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