principal section


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principal section

[′prin·sə·pəl ′sek·shən]
(mathematics)
A normal section at a given point on a surface whose curvature has a maximum or minimum value.
(optics)
A plane in a crystal that contains the crystal's optic axis and the ray of light under consideration. Also known as principal plane.
References in periodicals archive ?
The analysis of these methods clearly illustrates that the distribution of steel fibres in principal section, and the anchorage of fibre in concrete matrix are estimated differently.
The volume is divided into five principal sections:
The book is divided into three principal sections: 'Part I: Setting the Scene', 'Part II: Research Findings' and 'Part III: Conclusions'.
Designed in a loosely Italianate style, it has an early 19th century core with the principal sections of the hall dating from the late Victorian era.
Cater divides his descriptions into two principal sections: the first, up to the mid-twentieth century; the second, the events that emerged from the folk clubs that became a feature of the general post-war folk revival.
The extensive study which precedes the present catalogue opens with consideration of the Cathedral's ritual and musical practices and of the roles of polyphony within them, and thereafter is divided into two principal sections, the first concerned with the sources themselves and the second with the repertory which they contain.
The book is divided into 15 chapters that comprise the introduction followed by four principal sections in which the authors utilize an inductive reasoning model to organize and present their thesis.
In particular, the document must contain two principal sections, the head of the National Agency for Science, Innovations and Informatization said.
is organized into two principal sections: Part One--The Principles of Bel Canto-1.
Richey (religion, Berea College) offers an overview of Confucianism in four East Asian regions--China, Japan, Korea, and Viet Nam--which constitute the principal sections of the book.
The aim/objective when establishing the SJGH was to establish a premier care giving centre which has two principal sections, namely, a non private section and a private section, they stated.
In three principal sections, the authors tackle assessing, organizing and putting a value on intangible capital.

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