Hat leider nicht wirklich so stattgefunden. Zumindest nicht bei Niels Bohr:
Zitat
The earliest account of the "barometer" legend we've found so far comes from a 1958 Reader's Digest collection, and the tale is usually identified as being the invention of Dr. Alexander Calandra, who included a first-person account of it in a 1961 textbook (The Teaching of Elementary Science of Mathematics) and published it as an article in Saturday Review in 1968. The various responses mentioned in the legend have also been included in lists of supposedly "real" answers given by physics students when confronted by this same question. (One such list was submitted to the periodical Current Science by Dr. Calandra himself.) Whether a real incident was the basis for Dr. Calandra's creation of this parable is unknown.
Zitat
Recent (1999) versions identify the barometer problem as "a question in a physics degree exam at the University of Copenhagen" and the imaginative student who answers it as "Niels Bohr, the only Dane to win the Nobel Prize for Physics." (This is not accurate, as two Danes, Benjamin R. Mottelson and Aage Niels Bohr, shared the Nobel Prize for physics in 1975.)
http://www.snopes.com/college/exam/barometer.asp
Lustig und lehrreich ist es aber trotzdem.
Gruß,
Alexander