ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00121.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

摘要:

AbstractThe discovery, in the summer of 1949, of an additional Sams Valley, Oregon, meteorite (ECN = + 1229,425; cl. = Om) on the Frank B. Payne property, near Beagle, Jackson County, Oregon, in the Trail Quadrangle, is announced. This meteorite was found by Mr. Payne's father in the late 1800′s, but has never before been reported. It is now on display in the Jacksonville Museum. The specimen measures 12.5 × 4.5 × 4 cm. (overall dimensions), and has a specific gravity (sp. gr.) of 6.82 and a hardness of 5.5–6.0, and weighs about 10

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00122.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00123.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00124.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00126.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00127.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

摘要:

AbstractAccurate density‐measurements are given for 2 australites and for 3 moldavites, and a chemical analysis, made of a moldavite, is compared with that of other tektites and with those of ancient and modern glasses. The chemical analysis is then used to approximate the coefficient of thermal expansion and other physical characteristics of tektitic materia

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00128.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

摘要:

AbstractThis paper is divided into 6 sections, of which an enumeration will constitute its abstract: (1) introduction; (2) trigonometric criteria for determining whether a given pointQlies on the great circle passing thru 2 other given points,AandB, of north poleP; (3) and (4) methods of determining the geographic coördinates of poleP; (5) determination of the distance of a given pointRfrom the great circle; and (6) determination of the coördinates of pointS, the point on the great circle closest to the given pointR. Several subtopics are discussed in the notes to the pape

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00129.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

摘要:

AbstractThis note contains a quoted account of an extraordinary observation made by Captain W. L. Stewart of the British Overseas Airways Corporation, on 1948 February 7, at 11h45mU.T., while he was flying west‐bound at an elevation of 10,000 feet, over a point whose equatorial coördinate number (ECN) = +0209,550, of what was apparently a downwardly concave, cylindrical dust‐cloud with a length of nearly 60 miles, which may have been meteoritic in or

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00130.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY

ISSN:0096-2805    

DOI:10.1111/j.1945-5100.1950.tb00131.x

出版商:Blackwell Publishing Ltd    

年代:1950

数据来源: WILEY