The Human Eye and the Sun PDF Download

Author: S. I. Vavilov
Publisher: Elsevier
ISBN: 1483180662
Category : Social Science
Languages : en
Pages : 169

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The Human Eye and the Sun

Author: Сергей Иванович Вавилов
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 156

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Author: S. Vavilov
Publisher: The Minerva Group, Inc.
ISBN: 0898752566
Category : Science
Languages : en
Pages : 158

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Book Description
The ancient conjecture as to the affinity of the Eye and the Sun has remained in modern natural science, though in a profoundly altered form. In our days science has discovered the true connection between the Eye and the Sun, a connection entirely different from that inferred by children, poets and the ancients. It is this true connection that this book is about.

Author: S. I. Vavilov
Publisher: Elsevier
ISBN: 1483156028
Category : Medical
Languages : en
Pages : 169

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Book Description
The Human Eye and the Sun, ""Hot"" and ""Cold"" Light is a translation from the Russian language and is a reproduction of texts from Volume IV of S.I. Vavilov, president of the U.S.S.R. Academy of Sciences. The book deals with theoretical and practical developments in lighting techniques. The text gives a brief introduction on the relationship of the human eye and the sun, describing the properties of light, of the sun, and of the human eye. The book describes hot (incandescence) and cold light (luminescence) as coming from different sources. These two types of light are compared. The text also discusses the chemical production of light such as that produced when hydrogen peroxide and potassium ferricyanide are added to a solution of triaminophthalic hydrazide with alkali. A blue light will emanate, lasting for hours or days, and more importantly, the temperature of the vessel containing the mixture is relatively low. The book also evaluates the efficiency of the electric bulb in terms of conversion from the source — power producing coal — to line distribution, and actual luminescence. The book expounds on the benefits of a lighting method in the form of fluorescence. It also explains the properties of fluorescence. The book is of interest to students of physics, electronics, and electrical engineering. It can also be appreciated by the general reader with some interest in history and scientific discoveries.

Author: Sergeĭ Ivanovich Vavilov
Publisher:
ISBN:
Category :
Languages : en
Pages : 11

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Author: Peter A. Ensminger
Publisher: Yale University Press
ISBN: 0300133529
Category : Science
Languages : en
Pages : 288

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Book Description
Which fungus is as sensitive to light as the human eye? What are the myths and facts about the ozone hole, tanning, skin cancer, and sunscreens? What is the effect of light on butterfly copulation? This entertaining collection of essays explores how various organisms -- including archaebacteria, slime molds, fungi, plants, insects, and humans -- sense and respond to sunlight. The essays in Peter A. Ensminger's book cover vision, photosynthesis, and phototropism, as well as such unusual topics as the reason why light causes beer to develop a "skunky" odor. He introducec us to the kinds of eyes that have evolved in different animals, including those in a species of shrimp that is ostensibly eyeless; gives us a better appreciation of color vision; explains how plowing fields at night may be used to control weeds; and tells about variegate porphyria, a metabolic disease that makes people very sensitive to sunlight and may have afflicted King George III of England. These engaging essays present a complicated yet fascinating subject in an accessible way. The book will be treasured by anyone interested in the wonders of biology.

Author: Helga Kolb
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: W. Bates
Publisher: Mary I. Oliver, Clark Night
ISBN: 1463687818
Category : Health & Fitness
Languages : en
Pages : 246

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Book Description
(Black & White Version.) Dr. Bates Original book. Natural Eyesight Improvement. Better Eyesight Magazine; July, 1919 to December, 1919 and Eyecharts attached in this Paperback book.Ophthalmologist William H. Bates discovered and perfected Natural Eyesight Improvement, The Bates Method'. He discovered the natural principles, true, normal function of the eyes (visual system) and applied natural methods, relaxation to return the eyes, eye muscles to normal function with healthy eyes, clear vision. He cured; unclear close and distant vision, astigmatism, crossed, wandering eyes, cataracts, glaucoma & other eye conditions. Natural Eyesight (Vision) Improvement was practiced years before Dr. Bates discovered it. It is the normal, natural function of the eyes. Hidden from the public by eye surgeons, Optometrists, optical businesses for over 100 years because this method works, is easy, anyone can learn, teach it, including children. It produces healthy eyes, clear vision and frees the patient from the need to purchase eyeglasses, drugs, unnecessary eye surgery. This book includes 12 Free PDF E-Books; Natural Eyesight Improvement Training; Do It Yourself-Natural Eyesight Improvement-Original and Modern Bates Method. 100+ Color Pictures. Less reading; Easy to learn steps-Read the short directions on the pictures to quickly learn, apply a treatment, activity for Fast Vision Improvement. (All of Dr. Bates, Clark Night's Kindle, Paperback books are in this E-Book.)+ Better Eyesight Magazine by Ophthalmologist William H. Bates - (Unedited, Full Set -132 Magazine Issues - 11 Years-July, 1919 to June, 1930.) Illustrated with 500 Pictures and additional, up to date Modern Natural Eyesight Improvement Training.+ Original Better Eyesight Magazine by Ophthalmologist William H. Bates - Photo copy of all his Original Antique Magazine Pages in the 1900's Print. (Unedited, Full Set 132 Magazine Issues-11 Years-July, 1919 to June, 1930.) A History Book. Learn Natural Eyesight Improvement Treatments directly from the Original Eye Doctor that discovered and practiced this effective, safe, natural method! Magazines &Method Hidden from the public by eye surgeons, Optometrists, optical businesses for over 100 years because this method works and frees the patient from the need to purchase eyeglasses, drugs, unnecessary eye surgery. Yes, it can and has reversed cataracts and other eye conditions!+ The Cure of Imperfect Sight by Treatment Without Glasses by Dr. Bates (Photo Copy of the Original Antique Book Pages) with Pictures. Dr. Bates First, Original Book. (Text version with Modern Treatments included.) 2nd Printing Title: Perfect Sight Without Glasses.+ Medical Articles by Dr. Bates - with Pictures.+ Stories From The Clinic by Emily C. A. Lierman/Bates. (Dr. Bates Clinic Assistant, Wife.)+ Use Your Own Eyes by Dr. William B. MacCracken M.D. (Trained with Dr. Bates.)+ Normal Sight Without Glasses by Dr. William B. MacCracken M.D.+ Strengthening The Eyes by Bernarr MacFadden & Dr. Bates - with Pictures and Modern Training. (Trained with Dr. Bates. One of the First Physical Fitness Teachers.)+ EFT Training Booklet - with Acupressure, Energy balance, strengthening, Positive Emotions.Easy step by step directions with Pictures.+ Seeing, Reading Fine Print Clear, Clear Close Vision (Presbyopia Treatments) with Videos.+ Eight Correct, Relaxed Vision Habits- A Quick Course in Natural Eyesight Improvement.+ Astigmatism Removal Treatments+ Eyecharts - 15 Large, Small and Fine Print Big C, E Charts for Close and Distant Vision, White and Black Letter Charts, Tumbling E Chart, Astigmatism Test and Removal Charts, Behavioral Optometry Charts. Eyechart Video Lessons.+ Audio & Video Lessons in Every Chapter - Learn a Treatment, Activity Quick and Easy.+ Videos Page; Links to 35+ Natural Eyesight Improvement Training Videos.See 'William H. Bates, Author's Page', for Video of internal book pages, full description of the Paperback & 12 free E-books.

Author:
Publisher:
ISBN:
Category : Low vision
Languages : en
Pages : 104

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Book Description
This collection of essays is both a personal chronicle of vision loss and an investigation into the human eye. Delving into the history of corrective lenses, eye contact, crying, ocularcentrism, the typewriter, Mr. Magoo, and off-label drug use, these essays examine the wide variety of ways we relate to eyeballs, vision, and blindness.

Author: Robert Ellis Dudgeon
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 144

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