Electron microscopy
 
Golden Mean/Golden Ratio and Quasicrystals
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

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Quasiperiodicity in quasicrystals may exist in 1-, 2-, or 3-dimensions of physical spaces and is related to special irrational numbers such as the golden mean golden mean ≈ 1.6180339887 that is related to five-fold symmetry through the relation golden mean. Here, τ is the interesting irrational number that has the worst approximation by a truncated continued fraction,

         interesting irrational number ------------------------------ [1445]

 

 

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