Physiology of the Impossible.
Exner meets mythology.
A naturalist's humiliation
Sigmund Exner, professor of physiology at the University of Vienna, used to
spend his holidays in the Austrian mountains. On his long mountain hikes Exner
often had a puzzling experience: From his elevated standpoint in the mountains
he observed a buzzard in the valleys beneath him flying higher and higher and
ending up moving in circles. In circling the buzzard constantly gained height -
although its wings did not show any movement. How can a bird keep its body in
the air and even gain height without flapping its wings? "Here we have a
problem", Exner notes, "and in view of such a buzzard - in addition to the usual
sensation of smallness and humbleness that man has in high mountain regions
anyway - I felt the humiliation of a naturalist who faces a phenomenon but
cannot explain it".
Reference: Geimer, Peter. 2001. Physiology of the Impossible. Exner meets mythology.. The Virtual Laboratory (ISSN 1866-4784), https://vlp.mpiwg-berlin.mpg.de/references?id=art7