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In lugnet.build.schleim, Bruce Hietbrink wrote:
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A stack of bricks is sort of like a crystal structure, with a repeated
pattern of unit cells. It turns out that molecules of certain point groups
will fit into certain types of crystal lattices, while others will not. Or
sometimes chiral molecules will fit into certain crystal lattices only when
paired with their enantiomers. In the same way certain bricks will stack to
form certain types of repeated structures, whereas others will not, or
perhaps certain forms will work if you pair up chiral bricks with their
enantiomers etc.
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I was contemplating the above,
while I was sorting a bunch of these:
So I made a couple of chiral bits:
Which go together to form a roughly cubic shape and its enantiomer:
Yet they also apear to be achiral if you orient them correctly:
Putting them together forms an interesting little “crystal lattice”:
^click to see the MOC page.^ Enjoy.
Peace and physical paradox, Professor Whateverly
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Message has 2 Replies:
Message is in Reply To:
 | | Re: Chirality
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| Hey, Awesome post! Larry has a point with the text on the studs, but when I teach symmetry and chirality and talk about everyday objects I always put in the caveat "this baseball has such-and-such symmetry properties, igoring all imperfections and (...) (19 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts, FTX)
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