Author: T. Stewart McKechnie
Publisher: Springer Nature
ISBN: 3030988287
Category : Science
Languages : en
Pages : 694
Book Description
This 2nd edition lays out an updated version of the general theory of light propagation and imaging through Earth’s turbulent atmosphere initially developed in the late ‘70s and ‘80s, with additional applications in the areas of laser communications and high-energy laser beam propagation. New material includes a chapter providing a comprehensive mathematical tool set for precisely characterizing image formation with the anticipated Extremely Large Telescopes (ELTS), enabling a staggering range of star image shapes and sizes; existing chapters rewritten or modified so as to supplement the mathematics with clearer physical insight through written and graphical means; a history of the development of present-day understanding of light propagation and imaging through the atmosphere as represented by the general theory described. Beginning with the rudimentary, geometrical-optics based understanding of a century ago, it describes advances made in the 1960s, including the development of the ‘Kolmogorov theory,’ the deficiencies of which undermined its credibility, but not before it had done enormous damage, such as construction of a generation of underperforming ‘light bucket’ telescopes. The general theory requires no a priori turbulence assumptions. Instead, it provides means for calculating the turbulence properties directly from readily-measurable properties of star images.
General Theory of Light Propagation and Imaging Through the Atmosphere
Author: T. Stewart McKechnie
Publisher: Springer Nature
ISBN: 3030988287
Category : Science
Languages : en
Pages : 694
Book Description
This 2nd edition lays out an updated version of the general theory of light propagation and imaging through Earth’s turbulent atmosphere initially developed in the late ‘70s and ‘80s, with additional applications in the areas of laser communications and high-energy laser beam propagation. New material includes a chapter providing a comprehensive mathematical tool set for precisely characterizing image formation with the anticipated Extremely Large Telescopes (ELTS), enabling a staggering range of star image shapes and sizes; existing chapters rewritten or modified so as to supplement the mathematics with clearer physical insight through written and graphical means; a history of the development of present-day understanding of light propagation and imaging through the atmosphere as represented by the general theory described. Beginning with the rudimentary, geometrical-optics based understanding of a century ago, it describes advances made in the 1960s, including the development of the ‘Kolmogorov theory,’ the deficiencies of which undermined its credibility, but not before it had done enormous damage, such as construction of a generation of underperforming ‘light bucket’ telescopes. The general theory requires no a priori turbulence assumptions. Instead, it provides means for calculating the turbulence properties directly from readily-measurable properties of star images.
Publisher: Springer Nature
ISBN: 3030988287
Category : Science
Languages : en
Pages : 694
Book Description
This 2nd edition lays out an updated version of the general theory of light propagation and imaging through Earth’s turbulent atmosphere initially developed in the late ‘70s and ‘80s, with additional applications in the areas of laser communications and high-energy laser beam propagation. New material includes a chapter providing a comprehensive mathematical tool set for precisely characterizing image formation with the anticipated Extremely Large Telescopes (ELTS), enabling a staggering range of star image shapes and sizes; existing chapters rewritten or modified so as to supplement the mathematics with clearer physical insight through written and graphical means; a history of the development of present-day understanding of light propagation and imaging through the atmosphere as represented by the general theory described. Beginning with the rudimentary, geometrical-optics based understanding of a century ago, it describes advances made in the 1960s, including the development of the ‘Kolmogorov theory,’ the deficiencies of which undermined its credibility, but not before it had done enormous damage, such as construction of a generation of underperforming ‘light bucket’ telescopes. The general theory requires no a priori turbulence assumptions. Instead, it provides means for calculating the turbulence properties directly from readily-measurable properties of star images.
The Design of Lighting
Author: Peter Tregenza
Publisher: Taylor & Francis
ISBN: 1135819793
Category : Architecture
Languages : en
Pages : 200
Book Description
Written primarily for the practising designer, The Design of Lighting brings together in one volume all that the practitioner is likely to need. The authors combine a technical introduction to lighting and colour theory with a guide to design concepts and criteria, to create a comprehensive source book for architects and designers on interior lighting design.
Publisher: Taylor & Francis
ISBN: 1135819793
Category : Architecture
Languages : en
Pages : 200
Book Description
Written primarily for the practising designer, The Design of Lighting brings together in one volume all that the practitioner is likely to need. The authors combine a technical introduction to lighting and colour theory with a guide to design concepts and criteria, to create a comprehensive source book for architects and designers on interior lighting design.
The Last Truth
Author: Bhumika Dwivedi
Publisher: Sanbun Publishers
ISBN: 9789380213637
Category :
Languages : en
Pages : 80
Book Description
Publisher: Sanbun Publishers
ISBN: 9789380213637
Category :
Languages : en
Pages : 80
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 678
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 678
Book Description
Juno II Summary Project Report
Author:
Publisher:
ISBN:
Category : Artificial satellites, American
Languages : en
Pages : 380
Book Description
Vol. I: United States support of the International Geophysical Year program included making Juno II rocket vehicles available for earth satellite launchings. This volume describes the first satellite flight unit lofted by a Juno II in an orbital attempt -- the Explorer VII.
Publisher:
ISBN:
Category : Artificial satellites, American
Languages : en
Pages : 380
Book Description
Vol. I: United States support of the International Geophysical Year program included making Juno II rocket vehicles available for earth satellite launchings. This volume describes the first satellite flight unit lofted by a Juno II in an orbital attempt -- the Explorer VII.
Camera
Author:
Publisher:
ISBN:
Category : Photography
Languages : en
Pages : 610
Book Description
Publisher:
ISBN:
Category : Photography
Languages : en
Pages : 610
Book Description
American Fiction, 1901-1925
Author: Geoffrey D. Smith
Publisher: Cambridge University Press
ISBN: 9780521434690
Category : Literary Criticism
Languages : en
Pages : 1064
Book Description
A 1997 bibliography of American fiction from 1901-1925.
Publisher: Cambridge University Press
ISBN: 9780521434690
Category : Literary Criticism
Languages : en
Pages : 1064
Book Description
A 1997 bibliography of American fiction from 1901-1925.
Improvement in Butt-log Grade with Increase in Tree Size, for Six Hardwood Species
Author: George R. Trimble (Jr.)
Publisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 536
Book Description
S2Work carried out by the Northeastern Forest Experiment Station in West Virginia in the past 12 years provides useful information about the relationships between tree d.b.h. and butt-log grade. The upper logs are not included in the relationships. Being smaller and containing more knots, these upper logs are generally of lower grade than the butt logs. Thus the average grade of all material in the sawlog portion of the tree is generally lower than the average grade of the butt log. In the West Virginia data, species differences in d.b.h.-grade relationship are readily apparent. This inherent tendency for species to have different proportions of the various grades in logs of the same size is a familiar phenomenon to grade-conscious foresters who work with hardwoods. The results in this paper provide a quantitative evaluation of this tendency for six of the local species.S3.
Publisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 536
Book Description
S2Work carried out by the Northeastern Forest Experiment Station in West Virginia in the past 12 years provides useful information about the relationships between tree d.b.h. and butt-log grade. The upper logs are not included in the relationships. Being smaller and containing more knots, these upper logs are generally of lower grade than the butt logs. Thus the average grade of all material in the sawlog portion of the tree is generally lower than the average grade of the butt log. In the West Virginia data, species differences in d.b.h.-grade relationship are readily apparent. This inherent tendency for species to have different proportions of the various grades in logs of the same size is a familiar phenomenon to grade-conscious foresters who work with hardwoods. The results in this paper provide a quantitative evaluation of this tendency for six of the local species.S3.
Magic Animal Rescue 1: Maggie and the Flying Horse
Author: E.D. Baker
Publisher: Bloomsbury Publishing
ISBN: 140888268X
Category : Juvenile Fiction
Languages : en
Pages : 61
Book Description
From beloved author E. D. Baker comes a brand-new, illustrated chapter book series featuring a spirited heroine and the magical animals and creatures she encounters! Eight-year-old Maggie has a keen eye for noticing things in the Enchanted Forest that no one else does -- like unicorns, griffins, and tiny flying horses with wings. One day while Maggie is herding sheep with her pesky stepbrother, she stumbles upon an injured flying horse. The only way to help the horse is to take it to a kindly stableman named Bob, who cares for many different magical animals! But in order to do so, Maggie must set out on her own and journey through the Enchanted Forest, which is full of dangerous trolls and goblins who get in her way. Will Maggie reach Bob in time to save her new friend? This new, black-and-white illustrated series is perfect for fans of Princess Ponies, Magic Horses, and Critter Club. Look for the more books in the Magic Animal Rescue series: Maggie and the Wish Fish Maggie and the Unicorn Maggie and the Flying Pigs And these other magical series by E.D. Baker: Tales of the Frog Princess The Wide-Awake Princess The Fairy-Tale Matchmaker More Than a Princess and more!
Publisher: Bloomsbury Publishing
ISBN: 140888268X
Category : Juvenile Fiction
Languages : en
Pages : 61
Book Description
From beloved author E. D. Baker comes a brand-new, illustrated chapter book series featuring a spirited heroine and the magical animals and creatures she encounters! Eight-year-old Maggie has a keen eye for noticing things in the Enchanted Forest that no one else does -- like unicorns, griffins, and tiny flying horses with wings. One day while Maggie is herding sheep with her pesky stepbrother, she stumbles upon an injured flying horse. The only way to help the horse is to take it to a kindly stableman named Bob, who cares for many different magical animals! But in order to do so, Maggie must set out on her own and journey through the Enchanted Forest, which is full of dangerous trolls and goblins who get in her way. Will Maggie reach Bob in time to save her new friend? This new, black-and-white illustrated series is perfect for fans of Princess Ponies, Magic Horses, and Critter Club. Look for the more books in the Magic Animal Rescue series: Maggie and the Wish Fish Maggie and the Unicorn Maggie and the Flying Pigs And these other magical series by E.D. Baker: Tales of the Frog Princess The Wide-Awake Princess The Fairy-Tale Matchmaker More Than a Princess and more!
The Ring of Five Dragons
Author: Eric Lustbader
Publisher: Macmillan
ISBN: 0312872356
Category : Fiction
Languages : en
Pages : 690
Book Description
After suffering for a century under the oppressive V'ornn invaders, the Kundalan people put their hopes on Dar Sala-at, a hero foretold by prophecy, who can wield the sorcerous power of the lost Ring of Five Dragons to save his people.
Publisher: Macmillan
ISBN: 0312872356
Category : Fiction
Languages : en
Pages : 690
Book Description
After suffering for a century under the oppressive V'ornn invaders, the Kundalan people put their hopes on Dar Sala-at, a hero foretold by prophecy, who can wield the sorcerous power of the lost Ring of Five Dragons to save his people.