# ^^Classics, phys & math.

# math.ubc.ca/~cass
University of British Columbia, Bill Casselman

- G. P. Dandelin
- Hyperboloids of
revolution
A translation of the paper "Sur l'hyperboloid de revolution" (1826)
by G. P. Dandelin, in which he recalls his construction of the focal
points of conic sections of circular cones, and extends it to sections
of one-sheeted hyperboloids of revolution. This includes nice
geometrical proofs of the theorems of Pascal and Brianchon on inscribed
and circumscribed hexagons of ellipses. See also the
notes on Pascal's Theorem.

- H. J. S. Smith
- Note on continued
fractions
This is the paper in which Smith proposed the now classical
geometrical interpretation of continued fractions in terms of lattice
points in the plane, as well as another little known one on the line.

- E. Rutherford
- The
scattering of alpha and beta particles ...
- The Calendar
The entry from the 11th Edition of the Encyclopaedia.

- Archimedes -
The quadrature
of the parabola
Heath's translation

In Praise of Scribes (De
Laude Scriptorum). Johannes Trithemius.

Erasmo da Rotterdam. Elogio
della follia. In praise of Folly.

## Why is mathematics teaching so poor?

"Let us ask why on earth the Philosopher is contented with obscure teaching.
We reply that it is just as in the temples, where curtains are used for the
purpose of preventing everyone, and especially the impure, from encountering
things they are not worthy of meeting. So too Aristotle uses the obscurity of
his philosophy as a veil, so that good people may for that reason stretch their
minds even more, whereas empty minds that are lost through carelessness will be
put to flight by the obscurity when they encounter sentences like these." (The
commentator Ammonius (5th c.) On Aristotle's Categories, Prolegomena 7.7-7.14.
Translated by S. Marc Cohen and Gareth Matthews)

Those whom the gods wish to destroy universities, they make deans.

From the autobiography of Salvador Luria, Nobel Prize winner for his work
in genetics