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Author: Gale A. Harvey
Publisher:
ISBN:
Category : Meteors
Languages : en
Pages : 28
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Author: Gale A. Harvey
Publisher:
ISBN:
Category : Meteors
Languages : en
Pages : 28
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 482
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723260933
Category :
Languages : en
Pages : 24
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Book Description
A spectrogram of a fast optical meteor was reduced and analyzed, and 60 features were identified in the spectrum. Air and ionized elements in this meteor radiate throughout the spectrum from 3000 A to 6800 A. A mass of 9 mg and an effective radiation temperature of approximately 5700 K were computed for the meteor. Weight ratios of Ca: Fe, and Mg: Fe, and Na: Fe were computed. A plasma particle velocity distribution for meteors was derived, and the average collision speed obtained from this distribution was compared with the relative collision speed of a Fe-N2 gas mixture at 5700 K. Harvey, G. A. Langley Research Center NASA-TN-D-8505, L-11433 RTOP 506-16-36
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1068
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 668
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Author: Siegfried Böhme
Publisher: Springer Science & Business Media
ISBN: 366212310X
Category : Science
Languages : en
Pages : 796
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Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 20 contains literature published in 1977 and received before February 20, 1978; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. BouSka, Prague, who surveyed journals and publications in Czech and supplied us with abstracts in English, and by Prof. P. Brosche, Bonn, who supplied us with literature concerning some border fields of astronomy.
Author:
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Category : Government publications
Languages : en
Pages :
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Author: Siegfried Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123010
Category : Science
Languages : en
Pages : 757
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Author: Heinrich Schellen
Publisher:
ISBN:
Category : Spectrum analysis
Languages : en
Pages : 744
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Author: Heinrich Schellen
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 740
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