Physical Sciences and Mathematics Commons^™

Electric Double-Refraction In Carbon Disulphide At Low Potentials, Gustaf W. Elmen

University Studies (University of Nebraska) (1888–1984)

When light polarized at an angle of forty-five degrees to the lines of force is passed through certain dielectrics, between two parallel electrodes, they become double-refracting. The difference of phase, delta, between the two components of light at right angles and parallel to the lines of force, as represented by Kerr and verified by later investigators, is

δ = ± BP²l/a²

where B is the electro-optic constant, depending on, the dielectric, I the length, and a the distance between the plate' electrodes in centimeters, and P the difference of potential between the electrodes in C.G.S. units.

From …

Some Kentucky Clays, Including Kaolinic, Plastic And Fire Clays: Clays In Several Parts Of Kentucky, With Some Account Of Sands, Marls And Limestones, Aug Foerste, James H. Gardner

Bulletin--KGS

The bulletin is preliminary in character and is offered now simply in order to meet the urgent calls for all information concerning our clays that is at present available. A more comprehensive report, in which not only the geology and distribution of our clays, but also their technological values, will be given, will follow in due course.

Data for such a bulletin are being gathered as rapidly as circumstances will permit. Among the clays upon which more field work is required are some of those associated with the coals and Conglomerate Measures of the Eastern Coalfield; those in other Lower …

The Electronic Theory, J. Harry Clo

Archived Theses and Dissertations

No abstract provided.

Notice Of A New Fossil Mammal From Sioux County Nebraska, Erwin Hinckley Barbour

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The Morrison Formation And Its Relations With The Comanche Series And The Dakota Formation, T. W. Stanton

United States Geological Survey: Staff Publications

The beds now generally designated on U. S. Geological Survey maps as the Morrison formation have been a subject of interest and discussion since I877, when abundant remains of dinosaurs were found in them. The first extensive collections of the vertebrate fauna were obtained in the neighborhood of Morrison near Denver, -in Garden Park, near Canyon City, Colorado, and at Como, or Aurora, Wyoming. Since then the formation has been recognized by means of its fossils, its lithologic features, and its stratigraphic relations in the Black Hills, on the Laramie Plains, and elsewhere in Wyoming, in Montana, in western Colorado, …

Bulletin No. 89 - A New Centrifugal Soil Elutriator, P. A. Yoder

UAES Bulletins

Within recent years much has been done toward determining the agricultural significance of certain physical properties of the soil. The grade of fineness is the most important of these physical properties, in that it determines, to a large extent, other properties. The· mechanical analysis of soils has thus come to be considered of primary importance in soil investigations. Any improvements in the methods or apparatus for mechanical analysis will, therefore, doubtless be welcomed by agricultural investigators. Though this is a very recent line of work, still many devices have been introduced for the separation of soil on the basis of …

X-Rays, J. Harry Clo

Archived Theses and Dissertations

No abstract provided.

The Graphical Representation Of Magnetic Theories, Harold N. Allen

Department of Physics and Astronomy: Dissertations, Theses, and Student Research

The induction theory of magnetism, introduced by Faraday, is now looked upon by all physicists as correct. The older theory which assumes the existence of magnetic fluids covering the ends of the magnet is in some cases mathematically simpler, and is for this reason often made use of. This, however, is apt to breed confusion as to the true nature of the induction or polarization in any given case. The difficulty Tyndall experienced in accepting Faraday's views as to diamagnetism, is accounted for by the fact that he was thinking in terms of the fluid theory, while Faraday was considering …

Present Knowledge Of The Distribution Of Daimonelix, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

Daimonelix when first discovered, in 1891, was thought to be confined to the elevated tablelands of central Sioux County, Nebraska. In the meantime its range has been extended and it is now known almost throughout the entire Arikaree formation, a tract probably about five hundred miles in diameter, situated in Nebraska, Kansas, South Dakota, Wyoming and Colorado. The more fibrous forms of Daimonelix constitute a character so constant as to justify the name Fibrous Arikaree for the upper half of the formation.

The Coal Measure Bryozoa Of Nebraska, George Evart Condra

George E. Condra Publications

In the summer of 1896, at the suggestion of Professor Erwin H. Barbour, Director of the Nebraska Geological Survey, the writer began a study of the fossil bryozoa of the state.

Report Of The State Geologist, Erwin H. Barbour

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geologic Atlas Of The United States: Scotts Bluff Folio Nebraska, N. H. Darton

United States Geological Survey: Publications

Explanation

The Topographic Map

The Geologic Map

Description of the Scotts Bluff Quadrangle

Geography

Geology

Stratigraphy

Eocene Period

Neocene Period

Pleistocene Period

Pre-Eocene Rocks

Brief Geological History of the Central Great Plains Region

Economic Geology

Underground WAters

Irrigation

Volcanic Ash

Ages of Rocks

Topographic Sheet

Areal Geology Sheet

Columnar Section Sheet

Illustration Sheet

Advertising Brochure: 1903 Mccormick Farm Equipment, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Report On The Progress Of The Nebraska State Geological Survey And The Morrill Geological Expedition Of 1901, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

IN spite of the phenomenal heat of the summer of 1901, which was of such intensity and duration that active work in the field was finally suspended, enough progress was made to justify the presentation of the matter to this society. It should be reported, first of all, that a request for funds, amounting to twelve hundred dollars, for publishing the first reports of the state geological survey, was presented to the Legislature, and was passed April 1, 1901, without comment or dissent. This may be recorded as the first sum voted by the state for the examination and publication …

Geological Atlas Of The United States: Camp Clark Folio, Nebraska, Charles D. Walcott, N. H. Darton

United States Geological Survey: Publications

12 oversize pages, 18-3/8 x 21-3/4 inches

Includes parts of Cheyenne, Scotts Bluff, and Banner Counties.

Geography, Economic Geology

Topographic Sheet

Areal Geology Sheet 41°30' 103°00' to 42°00', 103°30'

Columnar Section Sheet

7 photos

Geologic Atlas Of The United States: Scotts Bluff Folio, Nebraska, Charles D. Walcott, N. H. Darton

United States Geological Survey: Publications

Geography

Geology

Economic Geology

Topographic sheet

Areal Geology sheet

Columnar Section sheet

6 photos

The Geological Bibllography Of Nebraska, Erwin H. Barbour, Cassius A. Fisher

Department of Earth and Atmospheric Sciences: Faculty Publications

Where there is a wide diversity of interests it is necessary for citizens, including farmers, mechanics, merchants, students, and professional men, to make constant reference to. the various authors of the state to learn what has been done and what has been written along the diverse lines of investigation in which they are interested. In response, then, to constant inquiry the following list of papers is prepared, being compiled from every available source. PaleontoIogical papers dealing mainly with the descriptions have not been included in every case. But the list of articles concerning our geography, physiography, stratigraphy, resources, water-supply, etc., …

Water: Its Inluence On Health And Disease, John Wilby

Student and Lippitt Prize Essays

An insight into the health effects of water and diseases it may carry; provides alternative ideas and solutions for sanitizing.

The Determination Of Sulphuric Acid In The Presence Of Iron, Louis George Karl. Clarner Jr.

Student and Lippitt Prize Essays

This essay attempts to determine the best way to detect sulfuric acid in the presence of iron by investigating the already existing methods and reviewing other chemists’ procedures.

Atmospheric Electricity, Nannie Etta Butler, Allen Pettit Lary

Archived Theses and Dissertations

No abstract provided.

Report On The Work Of The Morrill Geological Expeditions Of The University Of Nebraska, Carrie Adeline Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

Through the generosity of the Hon. Charles H. Morrill, of Lincoln, the expeditions sent out from the University of Nebraska, known as the Morrill Geological Expeditions, have become a permanent organization of the University. Therefore, it is but a fitting mark of respect that reports of these expeditions be given to the Nebraska Academy of Science from time to time in order that they may become matters of record. Introductory to this work, a private geological excursion was undertaken in June of 1891, by Mr. Erwin Hinckley Barbour in the interest of the University of Nebraska. At this time the …

Glacial Grooves And Striae In Southeastern Nebraska, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

NEBRASKA is so close upon the western as well as the southern limit of the drift that evidences of glacial action which might be commonplace elsewhere are rare and interesting here. The mere fact that glacial grooves and striae have been found seems worthy therefore of mention. Glacial drift, readily recognizable as such, does not extend far west of the 97th meridian, and in but one place in the state, on the Dakota-Nebraska boundary, does it reach the 98th meridian. East of the 97th meridian it is distinct and unmistakable, and it may be offered as a safe statement that …

Report On The Initial Work Of The State Geological Survey Of Nebraska, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

IN a State such as Nebraska where there is no 'mineral'--a term which in the west has come to mean gold and silver-bearing--it is difficult to convince the masses that there is the least possible economic importance in a State geological survey.

If 'mineral' did occur, apathy could much more easily be overcome, and the appeals for a survey would find more willing and receptive ears. But something stronger than apathy is encountered in the prejudice which has been engendered against a State survey by men who have sought heretofore to establish such for the evident purpose of holding office, …

Abnormal Vapor Densities, Minnie Elizabeth Rice

Student and Lippitt Prize Essays

This essay questions Italian chemist Avogadro’s hypothesis about vapor densities, ultimately coming to the conclusion that Avogadro’s law is open to objection.

Determination Of Atmospheric Constituents, Ralph Ordway Brooks

Student and Lippitt Prize Essays

Discusses the elements of the atmosphere and its researchers, including, but not limited to, Black, Priestley, Scheele, Canvendish and Lavoisier.

Acetylene Gas; Its Preparation And Value As An Illuminant, Alfred W. Bosworth

Student and Lippitt Prize Essays

This essay briefly discusses the history of Acetylene gas and delves further into its production, uses and value.

Combustion Analysis; Estimation Of Carbon & Hydrogen, Clifford Brewster Morrison

Student and Lippitt Prize Essays

Documents the methods of composition analysis by Antoine Lavoisier the 18th century and the adoption and refinement of this method by Theodore V. Saussure and others in the 19th century to combustion analysis. Includes plates of measurement equipment used.

Tides, Robert Spink Reynolds

Student and Lippitt Prize Essays

Explores the ocean tide phenomenon and the influences on tide patterns.

Wells And Windmills In Nebraska, Erwin Hinckley Barbour

United States Geological Survey: Publications

SIR :

I have the honor to transmit herewith a manuscript entitled "Wells and Windmills in Nebraska," prepared by Erwin Hinckley Barbour, professor of geology in the University of Nebraska and acting State geologist. The data for this manuscript were obtained by Professor Barbour incidental to his studies of the geology of the State, and have been rounded out by special work carried on under his direction. The original manuscript as prepared consisted of two parts the first upon wells, and the second upon homemade windmills but owing to delays in printing the first part, it has been considered advisable …

Extracts Of Letters From Euler To Johann I Bernoulli, 1728-1729, Leonhard Euler

All Works by Eneström Number

No abstract provided.