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General expressions are given for the modulus of rigidity, 2 λ ̄ 2 , and compressibility, k̄ , of a medium of Lame's constants, λ 1 and λ 2 , loaded with a volume fraction, ϕ, of a filler of constants λ 1 ′ and λ 2 ′. To terms in the first power of ϕ λ ̄ 2 = λ ̄ 2 ( 1 + 15 ( λ 2...
A reduction of the spherical aberration of strong electron lenses can be achieved by a strong lens as a virtual image former and by a transformation of the image in a real one by means of one or more weak lenses. Calculations are carried out for bell‐shaped magnetic fields of the axial field...
In this paper the field of a point charge inside a hollow, infinitely long circular cylinder is studied. The case of an axial point charge is treated in detail. Three different methods are developed. The first method shows how to calculate the induced charges at the surface of the cylinder...
It is shown that the double lens probe‐type electron diffraction camera described earlier is capable of producing useful electron diffraction patterns of single microscopic crystals in the size range 200–2000A; the formation of an opaque carbonaceous deposit, which occurs when an electron...
The absolute energy of the light from a fluorescent calcium tungstate x‐ray screen, its spectral distribution, and the efficiency of conversion from x‐rays to light have been determined. The absolute energy and its spectral distribution were obtained spectrographically by comparison with a...
This paper presents a method for calculating pressure and oil flow in a section of an oil‐filled cable at load variations with due regard to both the hydraulic resistance of the oil canals and the elasticity of the sheath and the pressure armor, if any, and the compressibility of the oil. The...
A faithful representation of the locations of the peaks of electron density maps can be obtained rapidly by determining for each point in the projected unit cell the algebraic sum of the amplitudes of those reflections which are contributing either a maximum or a minimum at each point. Since...
X‐ray diffraction studies of the crystalline constituents in the acid open hearth chrome‐steel samples showed that chromium exists in these samples as a chrome‐iron spinel of the form, FeO⋅Cr 2 O 3 . Its density was 5.109 g∕cc and its melting 2160°C. It crystallized in the...
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