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ARSENJEVA-HEIL, A. (+) O. HEIL.

Eine neue Methode zur Erzeugung kurzer, ungedämpfter, elektromagnetischer Wellen großer Intensität. - [MODERN HIGH POWER LINEAR BEAM MICROWAVE ELECTRON TUBES]

Herman H. J. Lynge & Søn A/S
lyn49268
Berlin, Springer, 1935. 8vo. In contemporary halv cloth with gilt lettering to spine. In "Zeitschrift für Physik", Bd. 95, 1936. Entire volume offered. Stamp to front free end-paper. Fine and clean. Pp. 752-62. [Entire volume: VIII, 818 pp.].

First appearance of this important paper which constitute the first description of the fundamental principles behind modern high power linear beam microwave electron tubes."They described a transit-time tube in which the three characteristic features; velocity modulation, phase focusing, and energy transfer were designed to occur in three separate regions, an arrangement which is also characteristic of a klystron. Further they demonstrated, in my opinion for the first time, that it is necessary, in order to achieve high RF power output, to use a linear electron beam, and that the beam must be positioned in such a way as to prevent the electrons from landing on RF electrodes - they must only be allowed to penetrate the fringe field of the RF electrodes, finally landing on a separate electrode, now called the collector. This arrangement made it possible to separate high frequency from beam guiding electrodes, thus permitting the use of high power electron beams" (Sarkar, History of Wireless). "which outlined the fundamental working principles of the klystron tube, a high power microwave oscillator, used to provide the transmitter power in the newly developed radar equipment. Leaving Arsenjeva in Russia, he later moved to the UK to continue development work on the klystron with Standard Telephones and Cables (STC), the UK arm of ITT. The day before England went to war with Germany Heil slipped out of the country returning to Germany to continue his work at Standard Electric Lorentz (SEL), ITT's German arm in Berlin. Heil's klystrons, known as "Heil's Generators", became key components in Germany's World War II radars.""After the war Heil's name appeared on an FBI list of Germans accused of war crimes. He was brought to the US by the military and worked at Wright Patterson Air Force Base. Subsequently he formed his own company and carried out intensive research the physiology of the human ear and sound generation by small animals which he applied to the design of sound transducers. His 1973 patent for the Heil Air Motion Transformer (AMT) made him well known to HiFi buffs."
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Pfullingen, Günter Neske, (1954). 8vo. Original full black cloth with white lettering to spine. Very clean, bright, and fresh, also internally. Original orange dust-jacket with black lettering to spine and white lettering to front. Minimal edge wear. An excellent and clean dust-jacket with just minor signs of wear. Very slight soiling to title-page, otherwise no wear or markings to text. Letter from Heidegger inserted to inside of front board. Front free end-paper signed and dated by Heidegger and with an inserted note in ink from the person that Heidegger gave the book to stating that this highly personal memento from his student time in Freiburg and his memorable encounters with Heidegger was given to his son Matthias for his 40th birthday, in 1995. 283, (1) pp. First edition, presentation-copy signed by Heidgger and with an inserted letter, also signed and dated by Heidegger, of this seminal collection of lectures and essays, which was of decisive importance to the immense influence of Heidegger’s thinking upon post World War Europe. This collection of Heidegger’s lectures and essays contains such groundbreaking works as “Die Frage nach der Technik” (The Question Concerning Technology) and “Wissenschaft und Besinnung” (Science and Reflection), “”Dichterisch Wohnet der Mensch…” “, along with other important works written between 1936 and 1953 collected here for the first time. This collection would later be reprinted and serve as volume 7 of Heidegger’s collected works (the Gesamtausgabe). This copy is signed “Martin Heidegger” and dated (1954 – the year of publication) to the front free end-paper, and on the inside of the front board is inserted an autograph signed letter in Heidegger’s hand to “Sehr geehrter Herr Doktor” (honourable doctor), in which Heidegger asks to meet up the following day, suggesting different times of the day. The letter is dated Freiburg 10th of February, 1954, which is two days before Heidegger gave his groundbreaking lecture “The Question Concerning Technology” at the University of Freiburg, suggesting that the letter was given to someone attending the lecture, possibly someone with whom he wanted to discuss it beforehand. “The Question Concerning Technology” still serves as one of the most pertinent philosophical essays of modern time, foreshadowing what is arguably the greatest philosophical and moral dilemmas that we struggle with today due to modern technology. Heidegger begins with asking the question what technology is, in an attempt to fully understand its essence and to ultimately prepare a free relationship to it – a theme that could hardly be more relevant today. “As relevant now as ever before, this accessible collection is an essential landmark in the philosophy of science from one of the most profound thinkers of the twentieth century (New York Times). The advent of machine technology has given rise to some of the deepest problems of modern thought. Featuring the celebrated essay The Question Concerning Technology, this prescient volume contains Martin Heidegger's groundbreaking investigation into the pervasive enframing character of our understanding of ourselves and the world.” (Harper Collins: The Question Concerning Technology And Other Essays By Martin Heidegger, 2013). “Science and Reflection” (here published for the first time), a lecture delivered on August 4, 1953, to a small circle of attendees, is Heidegger’s meditation on the difference between science and “mindfulness”, and an as-relevant-as-ever attempt at uniting science as such, in itself, with its application and meaning, combatting scientific fragmentation. In line with the other foreshadowing lectures, “Dichterisch wohnet der Mensch”, given on October 6, 1951, in Bühlerhöhe, seeks to explore how to reach a peace or dwelling in a modern, technological world. Heidegger uses the quote by Hölderlin to explore how human existence is deeply intertwined with language and poetry and reaches the conclusion that to truly dwell is to live in a poetic way, allowing for the meaningful unfolding of the world through language. The other essays/lectures printed in this seminal volume are: Überwindung der Metaphysik (1936-1946) Wer ist Nietzsches Zarathustra (1953) Was heißt Denken? (1952) Bauen Wohnen Denken (1951) Das Ding (1950) Logos (Heraklit, Fragment 50) (1951) Moira (Parmenides, Fragment VIII, 34-41) (1952) Aletheia (Heraklit, Fragment 16) (1954)
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