Quote:
Originally Posted by KiGs  Good eye Felix  ... Should be okay now. |
Hi Kigs
I am trying to use this sequence in a slightly different way. Profpat envisages this as a cube but I see it as an octahedron. Whilst the cube has eight segments, the octahedron has eight sides and each of the tangrams takes up a side. If you mark one out on a sheet of paper, then fold it you have an eight sided solid consisting of two pyramids.
The tangrams can then be marked on each of the sides. Mark any side with three +++ and the opposite side with three ---. You can then go round each of the sides, changing only one + or - across each edge. This represents a basic plan of the charge on each of the sides. To see what provides the charge, draw a line at right angles across each of the edges of the triangles which make up the octahedron. For the +++ side mark each line on that side as + and the opposite end as -. Repeat this process for the --- side (but the other way round). All of the ends of the lines can now be marked as + and -, each line having a + end and a - end. If you do it right, they will agree with the tangrams.
Why am I doing this? Well I'm trying to work out a three dimensional model of the eight electrons in stable configuration in the second shell of an atom. And I think this may solve it. Want to have a go at drawing it???
regards
Felix