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Articles 1 - 15 of 15
Full-Text Articles in Physics
Mach's Principle: Why Are Some Reference Frames Inertial, And Others Not?, Joseph Moonan Walbran
Mach's Principle: Why Are Some Reference Frames Inertial, And Others Not?, Joseph Moonan Walbran
Scholarly Horizons: University of Minnesota, Morris Undergraduate Journal
Mach's principle is a conjecture that was popular among physicists in the early 1900s, and which still sees occasional interest today. The principle states that large accelerating masses induce a local inertial reference frame around them. This paper introduces the principle and its history, and discusses its influence on later theories, like Maxwellian theories of gravity and general relativity.
Letter To The Editor, John C. Wheeler
Letter To The Editor, John C. Wheeler
Journal of the Minnesota Academy of Science
No abstract provided.
Logic And The Second Law Of Thermodynamics, David Van Den Einde
Logic And The Second Law Of Thermodynamics, David Van Den Einde
Journal of the Minnesota Academy of Science
This paper presents a 2T thermodynamic cycle operating around the critical locus of ethylene. The cycle converts heat energy to work at a rate greater than the Carnot cycle. This energy conversion rate challenges the use of Carnot's thermodynamic efficiency as a foundation for the second Jaw of thermodynamics. The paper discusses the historical development of classical theory and the second law's foundation in logic.
Compton's 'Crucial Test' - Theoretical Preconceptions And Experimental Interpretation, Roger H. Stuewer
Compton's 'Crucial Test' - Theoretical Preconceptions And Experimental Interpretation, Roger H. Stuewer
Journal of the Minnesota Academy of Science
Arthur Holly Compton, as a result of his own research and confidence in the validity of classical electrodynamics, was convinced in 1921 that homogeneous x-rays and gamma rays could be affected in only two possible ways when passing through matter: either they gave rise to "truly scattered" radiation of the same wavelength as that of the incident rays, or they excited "fluorescent" radiation of a longer wavelength. When Compton was led to carry out experiments using homogeneous x-rays and actually found secondary radiation of longer wavelength, he regarded his result as a crucial test between the "truly scattered" and the …
Atomic Numbers Revalued, Frank H. Meyer
Atomic Numbers Revalued, Frank H. Meyer
Journal of the Minnesota Academy of Science
As a general physical theory, the Reciprocal System of D.B. Larson covers all physical fields, including atomic physics . Inasmuch as all of the conclusions reached in the theoretical development are derived entirely by deduction from the basic postulates of this system, the conclusions provide information that is completely independent of observation. The theoretical development indicates that the Mosely atomic number mathematical formula is quite right, and the Rutherford-Bohr-Mosely nuclear atom physical interpretation of atomic number is seriously wrong. The discrete units constituting atoms evidently are not neutrons and electrically charged particles. Nor are atoms made up of parts, a …
Metrology--An Experiment Where Industry And Education Meet, R. B. Hastings
Metrology--An Experiment Where Industry And Education Meet, R. B. Hastings
Journal of the Minnesota Academy of Science
This paper describes a project in which students worked in close cooperation with both the physics department of Macalester College and the gage block laboratory of the Continental Machine Company, manufacturers of ,precision gage blocks. Brief descriptions, including drawings, are given of both the interferometer and the constant temperature laboratory in which all measurements were taken. This constant temperature laboratory is set with precision at those two temperatures between which the average coefficient of linear expansion of a gage block is to be determined. Many such readings were taken and computations of the coefficient of expansion were made. Comparison of …
Applications Of The Silicon Solar Cell In High Altitude Research, James G. Busse
Applications Of The Silicon Solar Cell In High Altitude Research, James G. Busse
Journal of the Minnesota Academy of Science
No abstract provided.
Cosmic Radiation And Radio-Carbon Age Determination, Leland S. Bohl
Cosmic Radiation And Radio-Carbon Age Determination, Leland S. Bohl
Journal of the Minnesota Academy of Science
No abstract provided.
A Demonstration Of Various Procedures Used To Interest And Help Pupils To Understand Physics, O. M. Bjeldanes
A Demonstration Of Various Procedures Used To Interest And Help Pupils To Understand Physics, O. M. Bjeldanes
Journal of the Minnesota Academy of Science
No abstract provided.
Modern Physics, Charles L. Critchfield
Modern Physics, Charles L. Critchfield
Journal of the Minnesota Academy of Science
No abstract provided.
Binocular Space Perception, Kenneth N. Ogle
Binocular Space Perception, Kenneth N. Ogle
Journal of the Minnesota Academy of Science
No abstract provided.
Thermal Conductivity Of Air Layers, Zaboj V. Harvalik
Thermal Conductivity Of Air Layers, Zaboj V. Harvalik
Journal of the Minnesota Academy of Science
No abstract provided.
Threshold Values For The Perception Of The Direction Of Frequency Modulation, Abe Pepinsky
Threshold Values For The Perception Of The Direction Of Frequency Modulation, Abe Pepinsky
Journal of the Minnesota Academy of Science
No abstract provided.
Characteristics Of Spectrographic Plates In The Ultra Violet Region Between 2300-2000a, R. G. Beck, L. Lundberg, Elmer S. Miller
Characteristics Of Spectrographic Plates In The Ultra Violet Region Between 2300-2000a, R. G. Beck, L. Lundberg, Elmer S. Miller
Journal of the Minnesota Academy of Science
No abstract provided.
A Configurational Approach To Sound, Alfred R. Root
A Configurational Approach To Sound, Alfred R. Root
Journal of the Minnesota Academy of Science
No abstract provided.