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My friend created an advanced fluid scanner using a dodecahedron. His method is novel in that it: 1. Does not require rotation of the DUT, but instead uses jus
by proee 9y ago
My friend created an advanced fluid scanner using a dodecahedron. His method is novel in that it:
1. Does not require rotation of the DUT, but instead uses just rising fluid level.
2. Uses permeable fluid so it achieves full density scans.
He spent a number of years trying to get the product to market as a startup, but ran out of personal funding.
He believes Archimedes may have used the Roman dodecahedron as a fluid scanner to test the quality of their projectiles to improve accuracy.
See http://www.romansystemsengineering.com/our_product.html http://www.romansystemsengineering.com/our_product.html
- jamesrom 9y agoWhat property of a dodecahedron makes it useful for 3D scanning?
- nkurz 9y agoWow, this seems like an beautiful technique. Apparently, it's not that the dodecahedron is uniquely suitable, rather it offers the best compromise between competing factors. In this process, it mostly serves as a cage to hold the object for immersion, although it has some other useful properties as well: "There is no other 3d platonic structure that has a higher fill-factor (volume that can be inscribed within a sphere of rotation) relative to the entrance hole (i.e. face area), while minimizing periphery length." "Intuitively, one might suspect that both the dodecahedron and the icosahedron are reasonable choices of structure for the given constraints, with their subjective scores of 4.6 and 4.0 respectively. The dodecahedron offers increased fill factor, aperture size, and minimizes the periphery length, and is simple to manufacture." http://www.romansystemsengineering.com/hypothesis.html http://www.romansystemsengineering.com/hypothesis.html