Primeval Chinese Legends

Figure Legends

Figure Legends

Legends in urology.

I was fl attered to be invited by The Canadian Journal of Urology to contribute this article. However, I fi rst had to consult a dictionary to be certain I understood the defi nition of “legend.” I discovered that “legend” often refers to a tale about a saint or a supernatural being. Neither description applies to me and my career. Although many of my research projects required hard work and th...

Primeval symmetry breaking

A detailed examination of the Killing equations in Robertson– Walker coordinates shows how the addition of matter and/or radiation to a de Sitter Universe breaks the symmetry generated by four of its Killing fields. The product U = a2 Ḣ of the squared scale parameter by the time-derivative of the Hubble function encapsulates the relationship between the two cases: the symmetry is maximal when U...

More from the Primeval Forest

two octavo volumes; as this has been translated into English, we gather that it is a book of some consequence. Yet, he has dragged himself away from all his interests in Europe and devoted a valuable part of his life to medical missionary work in equatorial Africa. Such a man must be either a restless crank or a true altruist, and, as it is obvious from his writings that Dr. Schweitzer is not t...