Abbrev for primitive crystal lattice. See fig. at unit cell
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A chlorophyll a-protein complex absorption peak at /.=684nm that acts as the light trap in photosystem II.
A chlorophyll a-protein complex absorption peak at /.=700nm that acts as the light trap in photosystem I.
That of a PPI unit. Map display produced by intensity modulation of a rotating radial sweep.
A group for which every element's order is a power of p, where p is a prime number.
The electron shell in an atom corresponding to a principal quantum number of six. In naturally occurring elements it is never completely filled and is the outermost shell for most stable heavy elements. See panel on Atomic structure
That of an orbital electron when the orbit has angular momentum of one Bohr unit.
A trap used in sanitary pipes with the inlet vertical and the outlet inclined slightly below the horizontal.