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Author: Virendra N. Mahajan
Publisher: SPIE Press
ISBN: 9780819405364
Category : Science
Languages : en
Pages : 192
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Book Description
This book provides a clear, concise, and consistent exposition of what aberrations are, how they arise in optical imaging systems, and how they affect the quality of images formed by them. The emphasis of the book is on physical insight, problem solving, and numerical results, and the text is intended for engineers and scientists who have a need and a desire for a deeper and better understanding of aberrations and their role in optical imaging and wave propagation. Some knowledge of Gaussian optics and an appreciation for aberrations would be useful but is not required.
Author: Virendra N. Mahajan
Publisher: SPIE Press
ISBN: 9780819405364
Category : Science
Languages : en
Pages : 192
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Book Description
This book provides a clear, concise, and consistent exposition of what aberrations are, how they arise in optical imaging systems, and how they affect the quality of images formed by them. The emphasis of the book is on physical insight, problem solving, and numerical results, and the text is intended for engineers and scientists who have a need and a desire for a deeper and better understanding of aberrations and their role in optical imaging and wave propagation. Some knowledge of Gaussian optics and an appreciation for aberrations would be useful but is not required.
Author: Diane Miller Sommerville
Publisher: UNC Press Books
ISBN: 146964357X
Category : History
Languages : en
Pages : 447
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Book Description
More than 150 years after its end, we still struggle to understand the full extent of the human toll of the Civil War and the psychological crisis it created. In Aberration of Mind, Diane Miller Sommerville offers the first book-length treatment of suicide in the South during the Civil War era, giving us insight into both white and black communities, Confederate soldiers and their families, as well as the enslaved and newly freed. With a thorough examination of the dynamics of both racial and gendered dimensions of psychological distress, Sommerville reveals how the suffering experienced by Southerners living in a war zone generated trauma that, in extreme cases, led some Southerners to contemplate or act on suicidal thoughts. Sommerville recovers previously hidden stories of individuals exhibiting suicidal activity or aberrant psychological behavior she links to the war and its aftermath. This work adds crucial nuance to our understanding of how personal suffering shaped the way southerners viewed themselves in the Civil War era and underscores the full human costs of war.
Author: Roderick A. Ferguson
Publisher: U of Minnesota Press
ISBN: 1452942463
Category : Literary Criticism
Languages : en
Pages : 196
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Book Description
A hard-hitting look at the regulation of sexual difference and its role in circumscribing African American culture The sociology of race relations in America typically describes an intersection of poverty, race, and economic discrimination. But what is missing from the picture—sexual difference—can be as instructive as what is present. In this ambitious work, Roderick A. Ferguson reveals how the discourses of sexuality are used to articulate theories of racial difference in the field of sociology. He shows how canonical sociology—Gunnar Myrdal, Ernest Burgess, Robert Park, Daniel Patrick Moynihan, and William Julius Wilson—has measured African Americans’s unsuitability for a liberal capitalist order in terms of their adherence to the norms of a heterosexual and patriarchal nuclear family model. In short, to the extent that African Americans’s culture and behavior deviated from those norms, they would not achieve economic and racial equality. Aberrations in Black tells the story of canonical sociology’s regulation of sexual difference as part of its general regulation of African American culture. Ferguson places this story within other stories—the narrative of capital’s emergence and development, the histories of Marxism and revolutionary nationalism, and the novels that depict the gendered and sexual idiosyncrasies of African American culture—works by Richard Wright, Ralph Ellison, James Baldwin, Audre Lorde, and Toni Morrison. In turn, this book tries to present another story—one in which people who presumably manifest the dysfunctions of capitalism are reconsidered as indictments of the norms of state, capital, and social science. Ferguson includes the first-ever discussion of a new archival discovery—a never-published chapter of Invisible Man that deals with a gay character in a way that complicates and illuminates Ellison’s project. Unique in the way it situates critiques of race, gender, and sexuality within analyses of cultural, economic, and epistemological formations, Ferguson’s work introduces a new mode of discourse—which Ferguson calls queer of color analysis—that helps to lay bare the mutual distortions of racial, economic, and sexual portrayals within sociology.
Author: Lisa Regan
Publisher:
ISBN: 9780996715935
Category : Fiction
Languages : en
Pages : 322
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Book Description
FBI analyst Kassidy Bishop is assigned to the "For You" killer's task force after a series of sadistic murders bearing the same signature arise in different parts of the country. The homicides are both calculated and savage, occurring in different states, but bearing the same signature: the words "for you" scribbled at each crime scene. The case chills Kassidy, bringing back memories of her own encounter with a violent criminal five years earlier. Kassidy's mentor, legendary agent Talia "The Confessor" Crossen knows the task force assignment is Kassidy's chance to prove to her colleagues that she belongs in the Behavior Analysis Unit. For five years, other FBI agents and profilers scoffed at Kassidy's appointment to the BAU, believing she was only offered the position in exchange for her silence about the brutal assault that almost killed her. The stakes rise when the task force links the killer's signature to Kassidy. As more and more bodies turn up, Kassidy must delve into her past and the mysterious death of her twin sister, which holds the key to uncovering the killer's identity. The closer Kassidy comes to finding the killer, the closer she comes to a deadly confrontation that could cost her everything--including her own life.
Author: José Sasián
Publisher: Cambridge University Press
ISBN: 1107006333
Category : Science
Languages : en
Pages : 285
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Book Description
An accessible, well presented introduction to the theory of optical aberrations, covering key topics that are often missing from comparable books.
Author: Rik Brydson
Publisher: John Wiley & Sons
ISBN: 1119979900
Category : Science
Languages : en
Pages : 235
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Book Description
The book is concerned with the theory, background, and practical use of transmission electron microscopes with lens correctors that can correct the effects of spherical aberration. The book also covers a comparison with aberration correction in the TEM and applications of analytical aberration corrected STEM in materials science and biology. This book is essential for microscopists involved in nanoscale and materials microanalysis especially those using scanning transmission electron microscopy, and related analytical techniques such as electron diffraction x-ray spectrometry (EDXS) and electron energy loss spectroscopy (EELS).
Author: Virendra N. Mahajan
Publisher: SPIE Press
ISBN: 9780819425157
Category : Science
Languages : en
Pages : 476
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Book Description
Based on the author's lectures at the University of Southern California, where he teaches a graduate course in optical imaging and aberrations, this volume provides an understanding of how aberrations arise in optical systems and how they affect imaging. Emphasis is placed on the primary aberrations of simple optical systems as a foundation for the design of more complex and high image-quality systems. Each chapter ends with a set of problems. A separate volume (Volume 2) treats imaging based on diffraction. Annotation copyrighted by Book News, Inc., Portland, OR
Author: W.T Welford
Publisher: Routledge
ISBN: 1351469312
Category : Science
Languages : en
Pages : 297
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Book Description
Although the subject of optical design as a branch of applied physics is over one hundred years old, the use of aberration theory has changed considerably. Aberrations of Optical Systems covers elementary optics and aberration theory of various optical systems, including the use of nonaxially symmetric systems and diffractive optical elements in complex designs, such as head-up displays and the increasing use of scanning systems with laser illumination. The book provides the complete range of mathematical tools, formulae, and derivations needed for understanding the process of optical design and for planning optical design programs. While the treatment is mainly based on geometrical optics, some excursions into physical optics are made, particularly in connection with the problems of optical tolerances.
Author: Edgar D. Tillyer
Publisher:
ISBN:
Category : Aberration
Languages : en
Pages : 30
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Book Description
Author: Virendra N. Mahajan
Publisher: SPIE-International Society for Optical Engineering
ISBN: 9780819486998
Category : Aberration
Languages : en
Pages : 0
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Book Description
Ten years have passed since the publication of the first edition of this classic text in April 2001. Considerable new material amounting to 100 pages has been added in this second edition. Each chapter now contains a Summary section at the end. The new material in Chapter 4 consists of a detailed comparison of Gaussian apodization with a corresponding beam, determination of the optimum value of the Gaussian radius relative to that of the pupil to yield maximum focal-point irradiance, detailed discussion of standard deviation, aberration balancing, and Strehl ratio for primary aberrations, derivation of the aberration-free and defocused OTF, discussion of an aberrated beam yielding higher axial irradiance in a certain defocused region than its aberration-free focal-point value, illustration that aberrated PSFs lose the advantage of Gaussian apodizaton in reducing the secondary maxima of a PSF, and a brief description of the characterization of the width of a multimode beam. In Chapter 5, the effect of random longitudinal defocus on a PSF is included. The coherence length of atmospheric turbulence is calculated for looking both up and down through the atmosphere. Also discussed are the angle of arrival of a light wave propagating through turbulence, and lucky imaging where better-quality short-exposure images are selected, aligned, and added to obtain a high-quality image.
