phi

Dr. Crusius, however, detects a Φ; (the sign for g) over the first syllable of kateklusen and the second syllable of pontou.

Let AB (fig. 170) be a plane moving in the direction R making an angle φ with the plane.

If φ > 90, cos φ is negative and an additional pressure due to reaction is obtained.

As Laplace has shown, the values for K and T may also be expressed in terms of the function φ, with which we started.

This principle gave to the Greek alphabet the new signs φ, χ, υ, ω.