UNT Libraries Government Documents Department - 221 Matching Results

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5.6 Mass Spectrographs

Description: In recent years German physicists have been making increasing use of both mass spectrographs in the stricter sense and mass spectrometers which can only measure elative isotopic abundances and use electrical methods of measurement.
Date: unknown
Creator: Evald, H. & Marschall, H.
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#85-Classical Model of a Light Source

Description: Using classical concepts, the author establishes a model of a luminescence atom or molecule.
Date: unknown
Creator: Born, Max, 1882-1970
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1950 Plans of the Academy of Sciences USSR

Description: On 14 November 1949, The General Assembly of the Academy of Sciences USSR met in the academy's Conference Hall to discuss the 1950 plans of the Academy
Date: unknown
Creator: The General Assembly of the Academy of Sciences USSR
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About the Model of Bacterial Photosynthesis

Description: At the base of photosynthesis of green sulfur bacteria lies an oxidation-reduction reaction of transferring hydrogen from hydrogen sulfide to carbon dioxide, accomplished with the participation of light energy. Based on experiments the author concludes that chlorophyll in the process of photosynthesis plays the role of optical sensitizer.
Date: unknown
Creator: Maximov, N. A.
open access

About Thorium

Description: The discussion of the preparation and properties of thorium by Werner von Bolton have led the author to make comments regarding its preparation.
Date: unknown
Creator: Meyer, R. J.
open access

About Thorium

Description: Dr. H. Karsten responds to a critical review of an earlier article on Thorium originally written by Dr. von Bolton and reviewed by Mr. R. J. Meyer.
Date: unknown
Creator: Karstens, H.
open access

The Activation of the Rare Earths by Thermal Neutrons

Description: Corresponding investigations were carried out for rare earths. Fractional estimates of intensities and rough values of the activation cross sections with thermal neutrons for all earther are listed.
Date: unknown
Creator: Bothe, W. q (Walther), d 1891-1957
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The Activation of the Rare Earths by Thermal Neutrons

Description: The present knowledge of artificial radio-activity is more spotty for the rare earths than for any other region of the periodic table. The chief reason for this is the difficulty of obtaining sufficiently pure samples or at any rate such of well-known composition. Rare earthers were investigated through the activation by thermal neutrons.
Date: unknown
Creator: Bothe, W., (Walther). 1891-1957
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An Anode-Channel Source for Positive Ion Beams

Description: The dependence of the ion output on several variables was studied thoroughly and the point of optimum operatio was determined. Mercury ions were used and certain observed effects were ascribed to the presence of heavier ions.
Date: unknown
Creator: Schmitthenner, F.
open access

Atomic Energy

Description: Two chapters taken from the author's book on Atomic Energy which assists the general reader in understanding the many questions around its development.
Date: unknown
Creator: Shpolʹskiĭ, Ė. V. (Ėduard Vladimirovich), 1892-
open access

Atomic Energy and Medicine

Description: The physics of rays offered new ways of therapy by high-frequency and ultra-frequent currents. With the discovery of the spontaneous slow radioactive decay of certain elements, a new start was given for the study and the treatment of cancer and other diseases.
Date: unknown
Creator: Krylov, N. P., Nikolaĭ Petrovich)
open access

The Behavior of Complex Ions of Po

Description: Experiments on the electrolysis of Po from a NaOH solution reveal a method for determining the sign of the charge on Po ions in this medium.
Date: unknown
Creator: Haissinsky, M. M.
open access

Calculation of the Lowest Excited Levels of the Naphthalene Molecule

Description: A given calculation of the lowest energy states of the naphthalene molecule by the method of molecular orbitals with consideration of the non-orthogonality of the wave functions of neighboring atoms.
Date: unknown
Creator: Davydov, A. S. (Aleksandr Sergeevich), 1912-1993 & Kasha, M.
open access

Cathode Sputtering Problems

Description: The question of the nature and charge of the metallic particles emitted in cathode sputtering has been answered experimentally: the particles are primarily neutral atoms. The proof was obtained from the moving particles themselves by a new "spectroscopic method of vapor pressure measurement" in combination with a "vapor pressure measurement from coating density."
Date: unknown
Creator: Von Hippel, Arthur R. |(Arthur Robert), 1898-2003.
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