+technetium Posted August 27, 2011 Share Posted August 27, 2011 I'm creating my own personal geocoin, in cooperation with Chuck Turner from Palehorse Design. I've made it a functional geocoin. The front is a slide rule, but on a disk. It can be used to multiply divide etc. Put the one of one circle to 2.5 on the other. The three will align with 7.5 (2.5 x 3 = 7.5) and the 5 with 1.25 what also can be regarded as 12.5 because on a circle the numbers will continue. That's the reason the circle contains a fractal, Sierpiński's triangle, also an infinite repetition. The largest empty triangle contains the electron configuration scheme of technetium. In the other triangles rays are visible: No stable version of technetium exists. The slide rule also has a trigonometric scale (for the calculation of sine, cosine etc.) The back of the coins shows a Smith diagram. This was used by electrical and electronics engineers to determine impedance and related things. The coin has a diameter of 50 mm (2") and a thickness of 5mm (1/5"). Inside is a smaller rotating disc. The tracing code is placed on the edge. The coins are tractable on geocaching.com and will have it's own icon. This coin will be produced in four versions: Morning in gold; Evening in bronze; Night in silver; Special in gold and silver (only available in a set of four). More information: send an e-mail to geocoin a-with-a-circle-arround-it technetium point be Tc Quote Link to comment
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