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The failure of W. H. Bennett working with very fine negative points and of G. G. Hudson working with larger carefully polished negative Pt points in clean dry dust-free air to observe the regular relaxation oscillator-like pulses reported by Trichel for negative points in room air led to a...
The values of the mass of C 12 as determined by different observers, show a discrepancy well outside the corresponding probable errors. This mass is important since it is used in the determination of so many of the other isotopic weights. Fundamental to its determination is the mass difference C...
The Zeeman effect of praseodvmium has been studied at fields up to 95,000 oersteds over the range 2400 to 7100A. g and J values have been determined for 74 Pr II levels from resolved Zeeman patterns of 141 lines. With these data, together with new wave-length data from the M.I.T.-W.P.A....
In the case of a given electron microscope objective the diffraction defect diffuses the image of a geometrical point over a finite area. The contrast which can be obtained in the image of a single atom is limited by this phenomenon because the actual image of an atom extends over many times the...
The influence of the molecular binding of the proton has been investigated by measuring the total cross section per proton, for neutrons absorbed by cadmium (C neutrons), of a series of gaseous hydrocarbons of the form C n H 2 n + 2 . The measurements were also extended to include gaseous...
The band spectrum appearing in emission in the region λ 2 9 0 0 - 4 3 0 0 and believed to belong to the C O 2 + or possibly C O 2 molecule has been studied and the excitation conditions found to be in substantial agreement with the former results of Duffendack and collaborators and of Smyth. The...
The quenching and depolarization of mercury 2537A resonance radiation by helium, neon, argon, and krypton has been studied experimentally, the results being displayed in graphical and tabular form. Probable numbers of quenching and depolarizing collisions and cross sections for quenching and...
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