![]() ![]() It’s a bit like what people used to say about The Velvet Underground… they might not have sold the most records, but everyone who heard them, started a band of their own. There are millions of these on Youtube now… cog/mechanism videos. … which has been seen 2.6 million times… which I find quit amazing. ![]() Reminds me of this 1930s video containing lots of different geared mechanisms… Laczik Bálint… and has been included on a “ daily prints” list for teachers, which is a good idea as well. These can be programatically generated using a script created by Dr. The logarithmic spiral was first described by Descartes and later investigated by Jacob Bernoulli, who called it Spira mirabilis, “the marvelous spiral”.” – from makerbot It is related to Fibonacci numbers, the golden ratio, and golden rectangles, and is sometimes called the golden spiral. ![]() The segment addition postulate can be used to find one of the segment lengths when 3 points are collinear, and two of the distances are known.“A logarithmic spiral, equiangular spiral or growth spiral is a kind of spiral curve which often appears in nature.
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