A 5-pointed star’s “sine” and “cosine” functions
Based on the same principle as the polygonal trigonometric functions.
This was requested a few times, but I had to figure how to draw polar stars first. Finally got around to it.
I won’t be updating the sound generator. Sorry.
so exciting! i showed both of my precalc classes today and they were thrilled. thanks for making this for us, lucasvb!
(p.s. they are curious about the where the 2 graphs would intersect…)
![[LOA] London Underground Maps
(vía dy/dan » Blog Archive » )](http://24.media.tumblr.com/tumblr_meezwyX2wc1qz7x5xo1_500.jpg)
How Computer-Generated Animations Were Made, Circa 1964
How Computer-Generated Animations Were Made, Circa 1964
Interesting computer-made presentation demonstrating the earlier concepts of computer graphics. It is 15 minutes long, silent, and very slow moving, but from a digital literacy perspective, essential watching:
This film explains how the computer scientists and mathematicians at Bell Labs created early computer graphics films, like most (though not all) of these films, made by Bell Labs employees E.E. Zajac, A. Michael Noll, Ken Knowlton, Frank Sinden, and many others.
This film, A Computer Technique For the Production of Animated Movies, from 1964, gives the basics on the process, from Ken Knowlton’s BEFLIX programming language for a raster-scan (bitmap) output, to the hardware details (IBM 7094 mainframe, Stromberg-Carlson 4020 microfilm printer).
(via fuckyeahmath)
