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(...) Excellent Chris, what did you use for the bonds and what did you use for the atoms. And were you also able to show double covalent bonds. (which is something that would be hard to show) I would love to read the article if you want. I get so (...) (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts, lugnet.edu)
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 | | Re: Chirality
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(...) [snip] (...) Actually, you can model Lewis Structures* with LEGO too. I sent an article describing the LEGO-Lewis Model to the Journal of Chemical Education, but they rejected it :( A reviewer suggested that I re-write the "article" as an (...) (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts, lugnet.edu)
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 | | Re: Chirality
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(...) [snip] (...) Nah, you don't have to use a new piece (URL) [1] Chris 1. (URL) (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | Re: Chirality
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(...) And we would call them what..... Yes! Diastereomers :) (...) not to the pedantic (...) Chris (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | 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 (...) (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts, FTX)
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 | | Re: Chirality
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(...) LOL! I'm a chemist in my day job, so I made (URL) this>, but I didn't tackle tetrahedral shapes. (URL) Professor Dean Campbell of Bradley University teaches (URL) chemistry with LEGO> and has some tetrahedral shapes, though they are pretty (...) (20 years ago, 9-Sep-05, to lugnet.build.schleim, lugnet.parts, FTX)
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 | | Re: Chirality
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(...) I find that animals and plants make some of the most interesting MOCs. There are families of plants whose leaves are chiral. There's one particular house plant that I can think of, but I can't remember its name. I think some types have leaves (...) (20 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | Re: Chirality
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(...) I will never look at my bricks the same.... what a great idea for a lesson plan, I have written it down to tell my sister (a secondary science teacher), I am a training early childhood so chirality isn't on the curriculum :(. Is there nothing (...) (20 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | Re: Chirality
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(...) snip (...) Your post reminds me of my painful memories of organic chemistry from university... Never thought it could be applicable to things other than molecules! :) -Bryan (20 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | Re: Chirality
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(...) Good stuff. Seems BrickWiki fodder! I would footnote that many paired parts are not TRULY enantiomers since the logos on the studs are not reversed. But that is a very unimportant footnote since they are functionally mirrored. (20 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts)
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 | | Chirality
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LEGO and chirality Chirality is the property of an object that can not be superimposed on its mirror image. Examples includes both natural (biological) object such hands and cultural (technical) object such screws. A non-chiral (achiral) object can (...) (20 years ago, 8-Sep-05, to lugnet.build.schleim, lugnet.parts) !
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 | | Re: Lego Parts You Hate....
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(...) For the 8t gears, try putting the pin into a beam, hold it in place with the back of [LDrawPart 3959], and pull on the gear. --Bram (20 years ago, 1-Sep-05, to lugnet.general, lugnet.parts, FTX)
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 | | Re: Lego Parts You Hate....
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"danny staple" <orionrobots@gmail.com> wrote in message news:3ec53b3f0508301...ail.com... (...) Oh you can get those out easily enough, all you need is a sharp object, like a table edge or metal ruler edge, poke the gear with axle/bush in a bit, by (...) (20 years ago, 31-Aug-05, to lugnet.general, lugnet.parts)
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 | | Re: Lego Parts You Hate....
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(...) Minitalia bricks are like that! I'm glad that the headlight/washing machine brick has been redeemed! It's one of my faves. I can see why Gary doesn't care for it, it's indeed a poor substitute for a 1x1 window brick, but it's tres useful! (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts, FTX)
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 | | Re: Lego Parts You Hate....
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(...) I use something like that myself, but with some of the studless constructions - I have had the axle start to bend worryingly before the pins pop. I dont like sacrificing Lego though. another thing I hate is when an axle pin gets stuck, and (...) (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts)
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 | | Re: Lego Parts You Hate....
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(...) I have one of these on my building table (URL) it works wonders. There's only ever been a couple i've needed to demolish with pliers. ROSCO (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts)
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 | | Re: Lego Parts You Hate....
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(...) If there is one part I hate - it must be the old technic friction pin. When they get stuck, they get well and truly wedged, and when building "new" technic style models based on liftarms - you get one of those in by accident, you are in for a (...) (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts)
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 | | Re: Lego Parts You Hate....
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(...) snip (...) Agreed! Lately, I've been noticing a lot of building problems that could be solved by hollow-stud plates/bricks. Marc Nelson Jr. (URL) Marc's Creations>> (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts, FTX)
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 | | Re: Lego Parts You Hate....
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(...) These are nice for single color steam domes. I never liked the notched edges on 2x2 round brick. (...) My initial reaction to this part was of a similar vein, but I recently built a large retainer wall, using mostly 1xNx5 and 2xNx1 bricks. And (...) (20 years ago, 30-Aug-05, to lugnet.general, lugnet.parts, FTX)
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 | | Re: Brick versions over the years
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(...) Dave, Part of the problem is that there are no easy answers. The overlap in different mold variations for elements is so mixed up, to almost render any year/type mold/part statistics meaningless. Here are a few examples: 1) Waffle bottom (...) (20 years ago, 28-Aug-05, to lugnet.parts)
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