Kategoria BISAC: Science >> Physics - Optics & Light

Planetary Nebulae and How to Observe Them is for amateur astronomers who want to go beyond the Messier objects, concentrating on one of the most beautiful classes of astronomical objects in the sky.

Planetary nebulae are not visible to the naked eye, but they are a fascinating group of telescope objects. This guide enables a user equipped with an average-sized amateur telescope to get the best out of observing them. Topics covered include their astrophysical make-up, history of their discovery, classification and description, telescopes to use, filters, and observing...

This book is a comprehensive technical treatise on binoculars as visual optical instruments. The author begins by discussing the function of binoculars and the properties of human visual perception. Theoretical models for the synthesis of binoculars and the complex interplay of the different components of binoculars are described. Subsequently, the performance limits, as experienced by the observer in a variety of external conditions, are derived. In the concluding section, the book takes the reader outdoors, where they learn to evaluate the properties and limitations of their binoculars...

Dieses Lehrbuch fuhrtumfassend in die Grundlagen der Laserstrahlerzeugung ein und gibt einen guten Uberblick uber die gebrauchlichsten Laserstrahlquellen.Didaktisch zeichnet sich das Lehrbuch durch eine schrittweise nachvollziehbare Herleitung der Ergebnisse aus, wasneben der Vermittlung der Grundlagen auch gleich deren Anwendung trainiert. Diese didaktische Vorgehensweise zeigt sich auch bei den ausfuhrlicher als ublich behandelten Ratengleichungen. In der aktuellen Auflage wurden die Moden in optischen Fasern und die Herleitung des Schwarzkorperspektrums aufgenommen sowie fur einen...

In this second volume of the book series devoted to photorefractive effects we focus on the most recent developments in the field of photorefractive materials and we highlight the parameters which govern the photoinduced nonlinearity. The availability of materials having the required properties is of major importance for further development of this field, and there are many parameters which have to be considered in the figure of merit of a photorefractive material. As an example, it concerns in priority, the recording slope of the dynamic hologram and the saturation value of the index...