What you see in the transmission electron
microscope (image left, diffraction pattern right), as a 118 atom
single-walled carbon pentacone is rotated about its symmetry axis...
What goes on in reciprocal space during
specimen rotation, as the reciprocal lattice (the shadow) intersects the
Ewald sphere and lights up (red)...
Remarkably, this shadowy
predictor of scattering angles is
the 3D Fourier transform power spectrum
of the target's scattering potential,
participating in a kind of mathematical position-momentum
dance of complementarity
that might be called
the r2loop.
More detail on molecule reciprocal lattices may be found
in our page on
molecule
spatial harmonics. A more heiroglyphic
reciprocal lattice may be found
rotating
here. A full-blown nanocrystal weblab is under construction
here.
Look for more here soon.
This page is
http://www.umsl.edu/~fraundor/nanowrld/difaction.html.
It is hosted by UM-StL Physics and Astronomy, and Copyright
(2005) P.
Fraundorf. Whole-site page requests est.
around 2000/day hence more than 500,000/year. Requests for
a "stat-counter linked subset of pages" since 4/7/2005:
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