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Author : A. H. Mikesell
Publisher : Unknown
Page : 62 pages
File Size : 53,5 Mb
Release : 1955
Category : Stars
ISBN : STANFORD:36105030696251
Author : Jurgen R. Meyer-Arendt,Constantinos B. Emmanuel
Publisher : Unknown
Page : 146 pages
File Size : 51,5 Mb
Release : 1965
Category : Eye
ISBN : UOM:39015095089317
Author : John Scoville Hall,A. H. Mikesell
Publisher : Unknown
Page : 574 pages
File Size : 47,8 Mb
Release : 1950
Category : Astronomy
ISBN : OSU:32435054988092
Author : United States Naval Observatory
Publisher : Unknown
Page : 592 pages
File Size : 45,7 Mb
Release : 1950
Category : Electronic
ISBN : UIUC:30112089507773
Author : Anonim
Publisher : Unknown
Page : 276 pages
File Size : 52,6 Mb
Release : 1963
Category : Balloons
ISBN : UVA:X004885187
Author : Anonim
Publisher : Unknown
Page : 148 pages
File Size : 55,6 Mb
Release : 1965-04
Category : Physical instruments
ISBN : MINN:30000010267775
Author : Franklin Evans Roach,L. L. Smith
Publisher : Unknown
Page : 632 pages
File Size : 53,6 Mb
Release : 1964
Category : Photometry
ISBN : STANFORD:36105130370971
A study is presented of one year of systematic zenith observations made with similar photometers at two observing stations:Haleakala (latitude N 20.7 degrees) and Fritz Peak (latitude N 39.9 degrees).It is shown that, for an effec * tive wavelength of 5300 A, there is a change of intensity with sidereal time (and therefore right ascension) due to three components:(1) integrated starlight, (2) zodiacal light, and (3) airglow continuum. Quantitative separation of the components is made.A critical comparison is made with some earlier investigations with particular reference to the problem of the galactic light.(Author).
Author : Percy Henry Winfield
Publisher : CUP Archive
Page : 1108 pages
File Size : 44,6 Mb
Release : 1931
Category : Damages
ISBN : 8210379456XXX
Author : Anonim
Publisher : CUP Archive
Page : 824 pages
File Size : 41,5 Mb
Release : 2024-06-15
Category : Electronic
ISBN : 8210379456XXX
Author : Valerian Ilich Tatarski
Publisher : Courier Dover Publications
Page : 305 pages
File Size : 48,6 Mb
Release : 2016-12-14
Category : Science
ISBN : 9780486810294
This monograph describes the phenomena associated with the propagation of electromagnetic and acoustic waves through atmospheric turbulence. Geared toward specialists in radiophysics and atmospheric acoustics and optics, the treatment is also suitable for advanced undergraduates and graduate students. The author stresses applications to phase and amplitude fluctuations, scintillation of stars, radio scattering, and other problems. Part I covers topics from the theory of random fields and turbulence theory, including statistical description. Part II, on the scattering of waves in the turbulent atmosphere, is supplemented by an appendix on scattering of acoustic radiation. Part III offers a detailed presentation of line-of-sight propagation of acoustic and electromagnetic waves through a turbulent medium. Part IV concludes the text with a comparison of theory with experimental data
Author : Gary Urton
Publisher : University of Texas Press
Page : 247 pages
File Size : 52,6 Mb
Release : 2013-12-18
Category : Social Science
ISBN : 9780292790513
Above Misminay, the sky also is so divided by the alternation of the two axes of the Milky Way passing through the zenith. This mirror-image quadri-partition of terrestrial and celestial spheres is such that a point within one of the quarters of the earth is related to a point within the corresponding celestial quarter. The transition between the earth and the sky occurs at the horizon, where sacred mountains are related to topographic and celestial features. Based on fieldwork in Misminay, Peru, Gary Urton details a cosmology in which the Milky Way is central. This is the first study that provides a description and analysis of the astronomical and cosmological system in a contemporary community in the Americas. Separate chapters take up the sun, the moon, meteorological phenomena, the stars, and the planets. Star-to-star constellations, the "animal" dark-cloud constellations that cut through the Milky Way, and certain twilight- and midnight-zenith stars are analyzed in terms of their spatial and temporal integration within an indigenous cosmological framework. Urton breaks new ground by demonstrating the indigenous merging of such forms of "precise knowledge" as astronomy, meteorology, agriculture, and the correlation of astronomical and biological cycles within a single calendar system. More than sixty diagrams clarify this Quechua system of astronomy and relate it to more familiar principles of Western astronomy and cosmology.
Author : Roy Craig
Publisher : University of North Texas Press
Page : 308 pages
File Size : 48,6 Mb
Release : 1995
Category : History
ISBN : 0929398947
A former field investigator for the Condon Project, the University of Colorado's scientific study of UFOs, relates details of individual cases of reported UFO sightings and offers a historical overview of the UFO phenomenon.
Author : Leonardo Di G. Sigalotti,Fidel Cruz Peregrino,Alejandro Ramírez-Rojas
Publisher : CRC Press
Page : 429 pages
File Size : 40,5 Mb
Release : 2023-02-24
Category : Transportation
ISBN : 9781000844238
The book is a concise guide dealing with the subject of air turbulence and its methods of detection with particular applications to aviation turbulence. It begins with a general description of turbulence and provides a background into the nature and causes of atmospheric turbulence that affect aircraft motion, giving updates on the state-of-the-art research on clear air turbulence (CAT). Important physical processes leading to the Kelvin-Helmholtz instability, a primary producer of CAT, are also explained. The several categories of CAT along with its impact on commercial aviation are also presented in a separate chapter, with particular emphasis on the structural damages to planes and injuries. The central theme of the book deals with both the earlier and the latest CAT detecting methods and techniques for remote and in situ sensing and forecasting. A concise presentation of new technologies for reducing aviation weather-related accidents is also offered. A chapter on the weather accident prevention project of the NASA aviation safety program is also included. Additionally, the book ends with a full description of the recent research activities on CAT and future challenges in turbulence detection, prediction and avoidance.
Author : Deborah R. Coen
Publisher : University of Chicago Press
Page : 394 pages
File Size : 45,6 Mb
Release : 2008-09-15
Category : Science
ISBN : 9780226111780
Vienna in the Age of Uncertainty traces the vital and varied roles of science through the story of three generations of the eminent Exner family, whose members included Nobel Prize–winning biologist Karl Frisch, the teachers of Freud and of physicist Erwin Schrödinger, artists of the Vienna Secession, and a leader of Vienna’s women’s movement. Training her critical eye on the Exners through the rise and fall of Austrian liberalism and into the rise of the Third Reich, Deborah R. Coen demonstrates the interdependence of the family’s scientific and domestic lives, exploring the ways in which public notions of rationality, objectivity, and autonomy were formed in the private sphere. Vienna in the Age of Uncertainty presents the story of the Exners as a microcosm of the larger achievements and tragedies of Austrian political and scientific life in the late nineteenth and early twentieth centuries.
Author : C. Aerts,J. Christensen-Dalsgaard,D. W. Kurtz
Publisher : Springer Science & Business Media
Page : 872 pages
File Size : 53,8 Mb
Release : 2010-01-19
Category : Science
ISBN : 9781402058035
Understanding the stars is the bedrock of modern astrophysics. Stars are the source of life. The chemical enrichment of our Milky Way and of the Universe withallelementsheavierthanlithiumoriginatesintheinteriorsofstars.Stars arethe tracersofthe dynamics ofthe Universe,gravitationallyimplying much more than meets the eye. Stars ionize the interstellar medium and re-ionized the early intergalactic medium. Understanding stellar structure and evolution is fundamental. While stellar structure and evolution are understood in general terms, we lack important physical ingredients, despite extensive research during recent decades.Classicalspectroscopy,photometry,astrometryandinterferometryof stars have traditionally been used as observational constraints to deduce the internal stellar physics. Unfortunately, these types of observations only allow the tuning of the basic common physics laws under stellar conditions with relatively poor precision. The situation is even more worrisome for unknown aspects of the physics and dynamics in stars. These are usually dealt with by using parameterised descriptions of, e.g., the treatments of convection, rotation,angularmomentumtransport,theequationofstate,atomicdi?usion andsettlingofelements,magneto-hydrodynamicalprocesses,andmore.There is a dearth of observational constraints on these processes, thus solar values areoftenassignedtothem.Yetitishardtoimaginethatonesetofparameters is appropriate for the vast range of stars.