It was about fourteen years ago that some of us became intrigued with the idea of searching the sky for X-ray and gamma-ray sources other than the Sun, the only celestial emitter of high-energy photons known at that time. It was, of course, clear that an effort in this direction would not have been successful unless there occurred, somewhere in space, processes capable of producing high-energy photons much more efficiently than the processes responsible for the radiative emission of the Sun or of ordinary stars. The possible existence of such processes became the subject of much study and discussion. As an important part of this activity, I wish to recall a one-day conference on X-ray astronomy held at the Smithsonian Astrophysical Observatory in 1960. The theoretical predictions did not provide much encouragement. While several 'unusual' celestial objects were pin-pointed as possible, or even likely, sources of X-rays, it did not look as if any of them would be strong enough to be observable with instru- mentation not too far beyond the state of the art. Fortunately, we did not allow our- selves to be dissuaded. As far as I am personally concerned, I must admit that my main motivation for pressing forward was a deep-seated faith in the boundless re- sourcefulness of nature, which so often leaves the most daring imagination of man far behind.
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Vendeur : Better World Books Ltd, Dunfermline, Royaume-Uni
Etat : Good. 1974th Edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. N° de réf. du vendeur 1939457-6
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Vendeur : Webbooks, Wigtown, Wigtown, Royaume-Uni
Hard Cover. Etat : Good. No Jacket. First Edition. From an academic library with the usual stamps etc. Spine and board edges faded. This item is heavy and will attract postal surcharges. N° de réf. du vendeur OX4097
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Vendeur : Row By Row Bookshop, Sugar Grove, NC, Etats-Unis
Hardcover. Etat : Good. Etat de la jaquette : No Dust Jacket. First U.S. Edition. An ex-library copy in original light blue cloth. The usual ex-libris markings. The binding is sound, the text is clean, and there is little cover wear. Ex-Library. N° de réf. du vendeur 033128
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Vendeur : online-buch-de, Dozwil, Suisse
Hardcover Dec 31, 1974. Etat : gebraucht; gut. Leineneinband, leichte Alters- und Gebrauchsspuren, textsauber. N° de réf. du vendeur 523-5-48
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Vendeur : Basi6 International, Irving, TX, Etats-Unis
Etat : Brand New. New. US edition. Print on demand title. Delivery takes 20-25 days. Excellent Customer Service. N° de réf. du vendeur POD-56331
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Vendeur : BUCHSERVICE / ANTIQUARIAT Lars Lutzer, Wahlstedt, Allemagne
Etat : gut. X-Ray Astronomy (Astrophysics and Space Science Library, Band 43) In deutscher Sprache. pages. N° de réf. du vendeur BN373425
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Vendeur : Ria Christie Collections, Uxbridge, Royaume-Uni
Etat : New. In. N° de réf. du vendeur ria9789027702951_new
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Vendeur : Books Puddle, New York, NY, Etats-Unis
Etat : New. pp. 468. N° de réf. du vendeur 263075285
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Vendeur : moluna, Greven, Allemagne
Gebunden. Etat : New. It was about fourteen years ago that some of us became intrigued with the idea of searching the sky for X-ray and gamma-ray sources other than the Sun, the only celestial emitter of high-energy photons known at that time. It was, of course, clear that an ef. N° de réf. du vendeur 5814051
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Vendeur : Majestic Books, Hounslow, Royaume-Uni
Etat : New. Print on Demand pp. 468 52:B&W 6.14 x 9.21in or 234 x 156mm (Royal 8vo) Case Laminate on White w/Gloss Lam. N° de réf. du vendeur 5853962
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