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Subject: 
Builder's Block Crystal Lattice (Was Re: Chirality)
Newsgroups: 
lugnet.build.schleim, lugnet.parts, lugnet.announce.moc
Followup-To: 
lugnet.build.schleim
Date: 
Mon, 26 Sep 2005 04:21:12 GMT
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In lugnet.build.schleim, Bruce Hietbrink wrote:

   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.

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





Message has 2 Replies:
  Re: Builder's Block Crystal Lattice (Was Re: Chirality)
 
(...) I was playing around with the same piece and made your smaller cubes a couple months back... I didn't take the next step to your sculpture though. Good work! God Bless, Nathan (19 years ago, 26-Sep-05, to lugnet.build.schleim, FTX)
  Re: Builder's Block Crystal Lattice (Was Re: Chirality)
 
Hey, Ley Does that pattern repeat beyond the cube that you show, or does it stop there? Just curious... James Wilson (19 years ago, 26-Sep-05, to lugnet.build.schleim, FTX)

Message is in Reply To:
  Re: Chirality
 
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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