On the clock striking twelve he appeared slightly agitated, but he soon recovered, walked twice or thrice along the coach-house, stopped to bark, staggered, exclaimed “Halloa old girl!” (his favorite expression) and died. He behaved throughout with decent fortitude, equanimity and self-possession.
An amusing letter Charles Dickens wrote on the death of his beloved pet raven, Grip – one of history’s notable literary pets extolled in famous authors’ letters and journals.
The familiar trigonometric functions can be geometrically derived from a circle. But what if, instead of the circle, we used a regular polygon? In this animation, we see what the “polygonal sine” looks like for the square and the hexagon. The polygon is such that the inscribed circle has radius 1. (There’s a very neat reason for this.) Since these polygons are not perfectly symmetrical like the circle, the function will depend on the orientation of the polygon. More on this subject and derivations of the functions can be found in this other post
Now you can also listen to what these waves sound like
This technique is general for any polar curve. Here’s a heart’s sine function, for instance
Edgar Allan Poe’s “The Raven” read by Vincent Price.
Want: The Star Trek (TNG) crocheted by *smapte on deviantART
The Star Trek Crew (TNG), crocheted
Feeding adaptations in beaks