Gaveṣaṇam, Or, On the Track of the Cow ; And, In Search of the Mysterious Word ; And, In Search of the Hidden Light
Gaveṣaṇam, Or, On the Track of the Cow ; And, In Search of the Mysterious Word ; And, In Search of the Hidden Light

Author: Sebastian J. Carri

Publisher: Otto Harrassowitz Verlag

Published: 2000

Total Pages: 372

ISBN-13: 9783447042741

DOWNLOAD EBOOK

Gavesanam deals with the Vedic discourse on many levels. It is mostly with the Rgvedic and the Yajurvedic texts, that is, with the hymns and the ritual texts, that it does so. The work shows a search for an insight into the highly cultivated poetic mind of the Rsis, which displays mystery and myth, knowledge and secrecy in their creations. The first two chapters illustrate with some clarity the method which is adopted in order to come to grips with a few of the symbolic and metaphorical, mythic and ritualistic texts and lays the foundation for the rest of the essay. The approach is interpretive and, therefore, necessarily speculative. In the main, the procedure is neither classificatory nor descriptive of the texts, since many scholars have done excellent work in this manner. The present exercise highlights the importance of the Vedic Ida, the Vedic World, the Vedic gods and goddesses like the Mitravaruna, Agni, Vak, Visnu, Sarasvat, Soma, and so on, from an interpretive point of view. A few figures make comprehension easier and more concrete. The work as a whole may be considered to be a long essay of progressive approximations, which means that the thoughts that are presented have to be corrected and complemented by further approximations in a truly academic and scientific spirit. Such an effort opens a new way for a better understanding and appreciation of the Vedic and the post-Vedic literature and culture.

Natural Photonics and Bioinspiration
Natural Photonics and Bioinspiration

Author: Olivier Deparis

Publisher: Artech House

Published: 2021-09-30

Total Pages: 310

ISBN-13: 1630817988

DOWNLOAD EBOOK

Photonic structures occurring in biological tissues such as butterfly wings, beetle elytra or fish scales are responsible for a broad range of optical effects including iridescence, narrow-band reflection, large solid-angle scattering, polarization effects, additive color mixing, fluid-induced color changes, controlled fluorescence. Studies have provided understanding of the underlying optical mechanisms and the biological functions as well as inspiration for the design and development of novel photonic devices, also called bioinspiration. In this forward-thinking book, the research related to photonic structures in natural organisms is reviewed with a main foPhotonic structures occurring in biological tissues such as butterfly wings, beetle elytra, or fish scales are responsible for a broad range of optical effects including iridescence, narrow band reflection, large solid-angle scattering, polarization, additive color mixing, fluid induced color changes, and controlled fluorescence. This book reviews research of biological photonic devices in accordance with the fundamental aspects of physical optics and environmental biology. It provides readers with an understanding of numerical modelling based on morphological and optical characterizations as well as the quantitative treatment of color vision. This forward-thinking book ties these concepts to the design and synthesis of bioinspired photonic devices and opens the door to the applications of nature’s lessons in the technical world. This resource introduces a methodology for working with and utilizing bioinspiration. It includes the experimental and numerical tools necessary for the characterization and simulation of photonic structures and uses original concepts as examples, with a focus on bioinspired hygrochromatic materials. Professionals are brought up to speed on a variety of fabrication techniques and methods of synthesis all following a straightforward bottom-up or top-down approach. The reader will gain an understanding of the capability of bioinspiration to meet human needs. This book’s explanation of how natural photonics structures behave as efficient solar absorbers or thermal management devices makes it a useful resource for technical professionals in the field of energy and environment, and the concepts presented in this book also have applications in the designs of optical coatings, sensors, and light sources.