Crystals of golden proportions
نویسنده
چکیده
When Dan Shechtman entered the discovery awarded with the Nobel Prize in Chemistry 2011 into his notebook, he jotted down three question marks next to it. The atoms in the crystal in front of him yielded a forbidden symmetry. It was just as impossible as a football – a sphere – made of only sixcornered polygons. Since then, mosaics with intriguing patterns and the golden ratio in mathematics and art have helped scientists to explain Shechtman’s bewildering observation.
منابع مشابه
Proportions in the height components of the four-porch mosques
Proportions can be called a mathematical concept that creates a good relationship between the components of the work in architecture and likewise a sense of order among the parts of a visual composition in the audience. Proportions not only can can make building component arrengment regular but also it can it can create a sense of aesthetics. Traditional Iranian artists and architects have been...
متن کاملGolden proportions as predictors of attractiveness and malocclusion.
OBJECTIVE In recent years, the golden proportions have been evaluated by various researchers in the general population and orthodontic patients to establish their correlation with facial attractiveness and esthetics, but with conflicting results. The present study aimed to analyze the frontal facial golden proportions for three groups of young adult females, an attractive group, and two maloccl...
متن کاملPutative golden proportions as predictors of facial esthetics in adolescents.
INTRODUCTION In orthodontics, facial esthetics is assumed to be related to golden proportions apparent in the ideal human face. The aim of the study was to analyze the putative relationship between facial esthetics and golden proportions in white adolescents. METHODS Seventy-six adult laypeople evaluated sets of photographs of 64 adolescents on a visual analog scale (VAS) from 0 to 100. The f...
متن کاملInvestigating the relationship between the role and geometry of Iranian carpet and the geometry and proportions of the interior of the house, a case study: Qajar and Pahlavi houses in Tehran
There are signs of compatibility between Iranian architecture and carpet in terms of geometry and proportions that the dimensions of the interior of the house and the dimensions of the carpet are closely related. Attention to the carpet in two dimensions of design and geometric dimensions has been an important factor in shaping the dimensions of the interior of the Iranian house. This study aim...
متن کاملProportions of Maxillary Anterior Teeth Relative to Each Other and to Golden Standard in Tabriz Dental Faculty Students
BACKGROUND AND AIMS Various methods are used to measure the size and form of the teeth, including the golden pro-portion, and the width-to-length ratio of central teeth, referred to as the golden standard. The aim of this study was to eval-uate the occurrence of golden standard values and golden proportion in the anterior teeth. MATERIALS AND METHODS Photographs of 100 dentistry students (50 ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011