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World's Smallest Working Model Train

Model train enthusiast David K. Smith has built a miniscule train layout which works - the train travels in an ellipse, including through a "mountain."
"Thus, what was intended to be a Z scale model of a 4- by 8-foot HO scale layout became a Z scale model of a 2- by 4-foot N scale layout! After I picked myself up off the floor, I made a few quick calculations... the modeling scale would be an eye-popping 1:35,200, and the finished layout would measure .125 by .200 inches..."

The video shows the basics of the layout and the clever solution re the motor.  Further details re the construction are here.

Neatorama has previously posted links to about 80 of the world's smallest things.

YouTube link.  Via Nothing to do with Arbroath.

Comments (6)

Newest 5
Newest 5 Comments

I have to agree with #2 and #3 -- it's not a model train, and it only looks like one from the right angle. This is like me calling a fleck of lint a 1/100,000 scale model of a cloud, even though it's not made of water.
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It's not a actual model train! There are no individual cars, an operating engine, or anything else that would make it qualify as one. It's a clever hack that sort of ~looks like~ a train. Sheesh!...
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If you find this interesting you should go check out Bruce Lipton also, he explains how dna/rna/signals works very good:
http://video.google.com/videoplay?docid=-8506668136396723343
http://video.google.com/videoplay?docid=-6568107389365915765
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That was extremely interesting. However, I am not sure about the application into antibiotics. It seems more like the idea would suppress the bacteria - making the world dependent on the bacteria inhibitors long term. I can see the short term applications of slowing disease, but I don't feel like there is a viable long term application in her presentation. I do believe it would useful and easier to use the molecules used to talk intra-species as a indicator of that species in the body. but I digress and concede that it was extremely fascinating.
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@gtstiggy: That's what I thought too. I think she was talking about a "treatment" not a resolution. Also if you make bacteria grow and divide and become bigger population, race conditions for resources may start. Also depending on bacteria type, the hosted bacteria may produce biochemicals that are poisonous or harmful for the host with timely growing amounts. May be there are other biological things that modified sensing chemicals do on targets she do not talk about here.
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