Physical Sciences and Mathematics Commons^™

Actino- And Thermo- Response Of Molybdenite In Vacuo With Various Colored Lights, John H. Fulton

Master's Theses

The purposes of this investigation are to study the reaction of molybdenite cells to light of various colors while in vacuo and at various temperatures. The samples of molybdenite were also subjected to radiant heat in the last part of the experiment, which was undertaken to determine to some extent the amount of thermos-electric effect which was due to thermal radiation in the first part of the investigation.

General Steps In The Revolution Of The Calculus From The Time Of The Ancients To The Present, Sister Mary Virginia

Electronic Thesis and Dissertation

Mathematics is the most ancient of the sciences, yet it is not surpassed by any in modernity, bu is flourishing to-day at a rate unsurpassed and unapparelled by means of the Calculus. Mathematics is like to a wheel, which has influenced mechanism... Who invented this wheel, is not known but its influence is unconsciously felt by you and me, and the whole world about us in a greater or lesser degree.

General Steps In The Revolution Of The Calculus From The Time Of The Ancients To The Present, Mary Virgiia

Electronic Thesis and Dissertation

No abstract provided.

Ua66/8/3 Second Rocky Mountain Field Trip, Wku Geography & Geology

WKU Archives Records

Report on the Second Rocky Mountain Field Trip taken by faculty and students of the WKU Geography & Geology department.

The Viscosity Of Liquids, Mary Bede Brielmaier

Bachelors’ Theses

This thesis contains a review of the principal methods of determining the viscosity of liquids, with an experimental investigation of the oscillating disk method.

Preliminary Construction Of A Photo-Electric Cell Concentrator, Stanley S. Williams

Bachelors Theses and Reports, 1928 - 1970

The separation of the valuable portion from the waste portion of an ore is an individual problem for every ore. However, the various methods for accomplishing this end, more or less classify themselves by the physical properties of the constituents of the ore. Most of the properties of minerals have been utilized in some way or other to affect the separation of the valuable from the invaluable parts. Practically nothing has been done so far with color and luster to attain this purpose.

It is believed that the photo—electric cell could also be used in concentrating a certain class of …

A Study Of The Temperature Of The Vapor Above A Boiling Salt Solution, Leo Wilson Scott

Honors Theses

The problem of temperature of the vapor over a boiling salt solution, has attracted a great deal of interest in the past, due partly to the conflicting data to be had and to the apparent paradox in the statement of Michael Faraday "that the temperature of the vapor over a boiling solution was the same as it would be over the boiling pure solvent."

The Effect Of Amines On The Setting Time Of Silicic Acid Gels, Phillip Holmes Dewey

Honors Theses

It is known that when sodium silicate solution and an acid are mixed, a gel is sooner or later formed. The speed of gelation depends on a number of factors. The fundamental factors on which gelation depends are- (l) The concentration of water glass (2) The concentration of acid (3) Agitation (4) Temperature In this work, these four factors were kept as constant as possible. It is also known that the presence of NH3 considerably reduces the time of set. In this work, the effect of CH3 NH2, which is closely related to NH3, was studied. The effect of methyl …

Solubility Curves Of Various Commercial Waxes In Several Organic Solvents, Lawson Joseph Ford

Bachelors’ Theses

The introduction contained herein is- merely meant to acquaint the reader with the common waxes. The subject matter itself has been purposely condensed. For more detailed accounts references are made to well known authorities throughout.

The Fundamental Theorem Of Algebra, John D. Fitzpatrick

Bachelors’ Theses

Algebra is indeed an interesting and intriguing field of knowledge. Many people fear and dread it, and­ yet what do they fear? Is not algebra a logical se­quence of simple facts based perhaps on a few self-evident truths? If people saw the value of algebra, they would strive more enthusiastically to understand its principles. John Locke has a fitting commentary on those who are unfamiliar with algebra.

An Investigation Of The Thermo- And Action- Electric Properties Of Molybdenite, William Otis Johnson

Master's Theses

Considerable work has been done on various mineral substances and chemical compounds within recent years to ascertain, if possible, whether the substance possessed any degree of photo- or thermos-sensitivity; and, to determine the characteristics of these responses. Among the most prominent substances which have been tested are selenium, bismuth, antimony, hematite, stibnite, and molybdenite. It was the purpose of this investigation to summarize the phenomena that have occurred within samples of molybdenite under a variety of conditions involving heat, light, and e.m.f.

Oval Curves, Leona G. Harner

Bachelors’ Theses

It has been the aim of the writer to present in this thesis a discussion of the most commonly known oval curves and their chief properties.

Continued Fractions, Alma Holmgren

Bachelors’ Theses

The aim of this thesis is to give the reader a general idea of the two types of continued fractions -- the simple continued fractions and the general continued fractions. Some properties of each type are also included.

Remedial Work In Subtraction, Multiplication And Division, Margaret A. Fleming

Bachelors’ Theses

The subject matter of this thesis is Remedial Work in Subtraction, Multiplication and Division of Whole Numbers. A class or 39 pupils, 15 girls and 24 boys were given the Compass Diagnostic Tests in Arithmetic in each or these three fundamentals.

Probability, The Historical Development Of The Theory And Its Application To Games Of Chance, Rose M. Brandt

Bachelors’ Theses

The theory of probability had its origin in isolated mathematical problems taken from games of chance. The beginnings of many of our modern theories and concepts can be traced back to Chinese origin. So too can the theory of probability. With the exception of the Chinese problem, dating from the beginning of the Christian era, no reference seems to have again been made to the theory prior to the latter part of the fifteenth century. In 1494 an Italian monk, Pacioli, was one of the first to introduce the "Problem of Points" into a treatise on mathematics. By the solution …

The American Mastodon With Mandibular Tusks, Erwin H. Barbour

Bulletin of the University of Nebraska State Museum

Mastodons and mammoths, represented by their relics, are so frequently exposed by shovel, plow, road grader, dredge, and rains, that they have become household words. They are plainly the commonest and best-known vertebrate fossils. They were fortuitously entombed, and are now accidently found. Their relics, though numerous, never represent the grand total that lived. Indeed, it was a rare individual that fell where circumstances favored rapid interment and consequent preservation; the grand majority fell in the open where their bones suffered rapid and complete decay. The American mastodon occupies a position between the long-jawed, long-skulled, four-tusked ancestor called Palaeomastodon, and …

The Environment Of The Prairie, J. E. Weaver, W. J. Himmel

Conservation and Survey Division

No abstract provided.

A Morning's Consignment Of Proboscidean Freight, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum

In the accompanying cut the array of great tusks outlined through their rough crates may lack attractiveness, nevertheless the assemblage is quite out of the ordinary, and seems worth recording in bulletin form. In all museums, and like institutions, freight and express deliveries are matters of daily routine; however, the morning's freight shown in the cut is unique. Herein is represented the more showy portion of the proboscidean freight received at the Nebraska State Museum in a single consignment, in the field season of 1930. The other boxes of mammoth skulls, jaws, and bones, received at the same time, are …

On The Trigonometric Expansion Of Elliptic Functions, M. A. Basoco

Department of Mathematics: Faculty Publications

The problem of expressing an elliptic function in terms of infinite sums of trigonometric functions has been treated by Hermite, Briot and Bouquet, A. C. Dixon and others. In the present paper we treat the same problem from the point of view of Cauchy's residue theorem in function theory, which is also Briot and Bouquet's starting point, but we differ from these authors in that the integrand we use leads to an expansion for an elliptic function which is valid in an arbitrarily wide, but finite, strip of the complex plane, and which contains certain classical results as special cases. …

The Milford Mastodon, Mastodon Moodie I, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum

In developing the hydro-electric plant of the Iowa and Nebraska Light and Power Company, a number of dams were thrown across the Blue River and its branches. One of these, known as Dam No.7, was built across the West Blue, about nine miles southwest of Milford, Seward county, Nebraska. This dam raised the water well above the ordinary river level, and flooded fifteen or twenty acres of valley land. The impounded water soaked into, and washed against, the base of a twenty-foot bank of cross-bedded sand, until some time during the winter of 1931, a portion of the bank near …

A New Amebelodont, Torynobelodon Barnumbrowni, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum

The subfamily of longirostrine mastodonts known as the Amebelodontinae have been so recently discovered and described that as yet they; are little known by the citizens of this state. They are most briefly and directly described as shovel-tusked mastodons. The first one found, namely Amebelodon fricki, was secured in April 1927, and was published June 1927. In the meantime, many other examples of Amebelodonts have been added to the Morrill Palaeontological Collections of the Nebraska State Museum. The exact number cannot be stated until the material shipped in from the field during the current season is unpacked, cleaned, and identified. …

Evidence Of Dinosaurs In Nebraska, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum

Nebraska has long been a collecting ground famous for its fossil mammals, but as yet no dinosaurian bones have been reported, nor have they been expected. The distal end of a finely preserved femur, however, has recently been brought to light, supposedly occurring in position in the Dakota formation of eastern Nebraska. It was discovered, collected, and donated by Mr. J. B. White, (University of Nebraska, Law, class of 1899) on his farm two miles south of Decatur, in northeastern Burt County, near the Missouri River. It was found in undoubted Dakota sand associated with many leaf impressions. This is …

Paleontology Of The Upper Cretaceous Of Chaco Canyon, New Mexico, Richard Pickard Vann

Earth and Planetary Sciences ETDs

It is the purpose of this paper to describe some Upper Cretaceous invertebrate fossils (including descriptions of an algal form, and some vertebrate teeth) collected by the writer in Chaco Canyon, New Mexico, and to give a brief summary of the physiography and stratigraphy of the region.

Some Results Of Magnetometric Surveying In Missouri, John Gustave Grohskopf

Masters Theses

"This thesis describes the results of a series of magnetic surveys carried on in the state of Missouri. The financial assistance required for the work was granted in the form of a fellowship to the author by the Industrial Club of the Industrial Bureau of St. Louis; Mr. George S. Smith, Director. Since the progress of any industrial center is accelerated by the mineral resources contiguous to it, the Industrial Club believed that further research upon known and also undeveloped mineral deposits might result in the development of them. It was decided that geophysical methods of research might show greater …

Studies In The Distribution Of Orbitolina Walnutensis Carsey, Shirley Alfred Lynch

Masters Theses

"This paper has shown the stratigraphic and geographic range of the foraminifer, Orbitolina walnutesis Carsey. Samples from sections in thirteen counties in north and north central Texas have been studied. Many geologists have previously studied these sections in detail, correlation them and published the results"--Summary and Conclusions, page 73.

Parametric Solutions Of Certain Diophantine Equations, T. A. Pierce

Department of Mathematics: Faculty Publications

In this note parametric solutions of certain diophantine equations are given. The method of obtaining the solutions is derived from an equation involving the determinants of certain matrices. It will be recognized that the method is a generalization of the method of Euler and Lagrange which depends on forms which repeat under multiplication. The matrices used in this paper must be such that their forms are retained under matric multiplication and addition. When integer values are assigned to the parameters of our solutions we obtain integer solutions of the particular equation under consideration; however not all integer solutions are necessarily …

A Certain Multiple-Parameter Expansion, H. P. Doole

Department of Mathematics: Faculty Publications

C. C. Camp has shown the convergence of the expansion of an arbitrary function in terms of the solutions of the systems of equations
X_1’ (λa₁ - Σ_i=2ⁿμ_i)X₁ = 0,
X_1’ (λa_i + μ_i)X_i = 0, (j = 2, 3, …, n),
where the a_i’s are functions of x, with the boundary conditions
X_i(-π) = X_i(π), (j = 1, 2, …, n).
In this paper it is intended to use a …

Test 190: John Deere Gp, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: John Deere GP

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER TESTS

TEST …

The Three-Point Gap As A Means Of Control In Instantaneous Photography, Elgin Albert Denio

Master's Theses

In 1926, Wynn Williams investigated the theory of the three-point gap, which phenomenon had been known and utilized for some time but until his investigation was not understood theoretically. This investigation has been divided into two distinct parts: First, when the energy was generated by a large Toepler-Holtz station machine; and second when the energy was generated by a one-kilowatt, 25,000 volt transformer.

Test 185: Rumely Model 6a, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …