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#1. ammonia maser | device - Encyclopedia Britannica
…maser used a beam of ammonia molecules that passed along the axis of a cylindrical cage of metal rods, with alternate rods having positive and negative ...
#2. Ammonia Maser | Applications of Quantum Mechanics
On Tuesday we will figure out how the Maser works. Ammonia is an interesting molecule. It consists of 3 hydrogens, and one nitrogen, which form a pyramid.
#3. The ammonia maser - Physics
Given the appropriate experimental information on ammonia, we can always solve these equations numerically. The key point, however, is that the equations are ...
A maser is a device that produces coherent electromagnetic waves through amplification by ... First prototype ammonia maser and inventor Charles H. Townes.
#5. 1 Ammonia Maser Masatsugu Sei Suzuki Department of ...
MASER: Microwave Amplification by Stimulated Emission of Radiation ... In the ammonia maser, the beam with molecules in the state a.
#6. The Ammonia Molecule (Maser)
The Ammonia Molecule (Maser). The Feynman Lectures (Volume III, chapters 8 and 9) makes a complete study of the two ground states of the Ammonia Molecule.
#7. The ammonia maser (Chapter 20) - The Physics of Vibration
The original maser of Gordon, Zeiger and Townes, driven by a focussed stream of ammonia molecules in their antisymmetrical state, provides a conveniently ...
#8. 188: The Ammonia Inversion and the Maser
In summary, the ammonia maser is a stunning illustration of quantum mechanics in action. We should teach the maser phenomenon from the quantum ...
#9. The Quantum Beat: Principles and Applications of Atomic Clocks
Chapter 10 Atomic and Molecular Oscillators: Masers 10.1 The Ammonia Maser The idea of a device using quantum transitions induced in molecules by a ...
#10. Superluminality and parelectricity: The ammonia maser revisited
由 RY Chiao 著作 · 1995 · 被引用 15 次 — tions in the ammonia maser leads to stimulated emission, and hence amplification, of microwaves. However, it is not well known that an inverted medium also ...
#11. Ammonia Maser on the 3, 2 Line as a Frequency Standard I
When the maser was tuned by a magnetic perturbation method, the frequency drift and ... It is shown that the ammonia maser will reach an accuracy of 10 -13, ...
#12. New ammonia masers towards NGC 6334I - Oxford Academic
Abstract. We report the detection of new ammonia masers in the non-metastable (8,6) and (11,9) transitions towards the massive star-forming region NGC 6334I ...
#13. Ammonia Masers | IEEE Journals & Magazine
Experimental and theoretical results on the stability, resettability and mutual consistency of ammonia masers are discussed. A method of manual tuning of the ...
#14. Introduction To Modern Physics - 第 292 頁 - Google 圖書結果
8.7 Ammonia Maser In 1955 Gordon , Zeiger and Townes first developed the ammonia maser . The vibrational energy levels of ammonia molecule consist of pairs ...
#15. The Performance of an Ammonia Maser with Two Resonators ...
An ammonia maser is described in which an additional resonant structure is inserted between the microwave cavity and the electrostatic ...
#16. Discovery of ammonia (9,6) masers in two high-mass star ...
1988), ammonia masers have attracted attention since the first detection of maser ... The first highly excited non-metastable ammonia maser was detected by ...
#17. Comparison of an Ammonia Maser with a Cæsium Atomic ...
SEVERAL atomic frequency standards of different types are now in use for comparisons with astronomically determined time. As the adopted frequencies of ...
#18. New Maser Emission from Nonmetastable Ammonia in NGC ...
The excitation of these rare ammonia masers is discussed in the context of the rich maser environment of IRS 1.
#19. AMMONIA MASER (AMMONIA MOLECULAR GENERATOR),
AMMONIA MASER (AMMONIA MOLECULAR GENERATOR),. Descriptive Note: Corporate Author: FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO. Personal Author ...
#20. Ammonia Maser in a Molecular Outflow toward W51
Measured with the VLA, the maser emission has a peak flux of 230 mJy and a ... and high excitation of the thermal ammonia indicate that the (3, 3) maser is ...
#21. Browsing RLE Progress Report, No. 046 (1957) by Subject ...
Some features of this site may not work without it. Toggle navigation. Browsing RLE Progress Report, No. 046 (1957) by Subject "Ammonia Maser".
#22. Research on ruby and ammonia maser amplifiers
Theoretical considerations on an r.f.-equivalent circuit for a reflection type cavity maser are given by which stability, gain and bandwidth may be ...
#23. The performance of an ammonia maser with two resonators in ...
An ammonia maser is described in which an additional resonant structure is inserted between the microwave cavity and the electrostatic separator.
#24. ammonia-maser - SchoolWorkHelper
... History · Business · English · Art. ammonia-maser. You are here: Home; ammonia-maser. SchoolWorkHelper. St. Rosemary Institution © 2010-2022. Go to Top.
#25. An Etymological Dictionary of Astronomy and Astrophysics - 1
A maser source in which excited → ammonia molecules (NH3) produce → maser emission. The first device to demonstrate the principle of → stimulated ...
#26. High Resolution Ammonia (N14H3) Maser - AIP Publishing
A N14H3 maser based on Ramsey's principle of separated oscillatory fields has been used to increase the resolution over a conventional maser.
#27. ammonia beam maser - 氨射束邁射 - 國家教育研究院雙語詞彙
以ammonia beam maser 進行詞彙精確檢索結果. 出處/學術領域, 英文詞彙, 中文詞彙. 學術名詞 計量學名詞, ammonia beam maser, 氨射束邁射 ...
#28. Magnetic Perturbation of an Ammonia Maser on the 3, 2 Line
Effects of external magnetic field on the amplitude and frequency of ammonia maser oscillator employing the J =3, K =2 line were measured and compared with ...
#29. Lecture 15: Time-Dependent QM & Tunneling Review and ...
Review and Examples, Ammonia Maser ... The N atom in the ammonia molecule (NH. 3. ) can has two equilibrium positions: above or below the plane of the H ...
#30. Lecture 14: A Pair of Square Wells and the Ammonia Maser
This video lecture, part of the series The Physics of Quantum Mechanics with James Binney by Prof. , does not currently have a detailed ...
#31. 014 A Pair of Square Wells and the Ammonia Maser
014 A Pair of Square Wells and the Ammonia Maser ... Fourteenth Lecture in the Quantum Mechanics Course given in Hilary term 2010. More in this series. View ...
#32. The ammonia maser: transitions in a time-dependent field
The nitrogen atom (N) in the ammonia molecule (NH3) can tunnel through the plane of the three hydrogen (H) atoms, so it can be 'up' or 'down'.
#33. Maser and Laser (2)
In the ammonia molecule NH3 the three hydrogen atoms lie ... The essential parts of the ammonia maser are ... the two energy levels of the ammonia molecule.
#34. ammonia maser 中文 - 查查綫上辭典
ammonia maser 中文::氨微波激射器…，點擊查查權威綫上辭典詳細解釋ammonia maser的中文翻譯，ammonia maser的發音，音標，用法和例句等。
#35. Design and Study of the Ammonia Maser - Google Books
Design and Study of the Ammonia Maser. Front Cover. Mauro J. Dentino. Thayer School of Engineering, 1963 - Ammonia - 100 pages.
#36. File:Ammonia maser atomic clock NIST.jpg
English: Ammonia maser frequency standard built 1949 at the US National ... in the ammonia (NH3) molecule produced by an ammonia maser, ...
#37. New interstellar masers in nonmetastable ammonia - PubMed
We report the astronomical detections of several ammonia inversion transitions ... The (J, K) = (9, 6) inversion transition shows maser-like emission in the ...
#38. A Ruby Maser is preferred to Ammonia Maser for microwave ...
MASER Maser (Microwave Amplification by Stimulated Emission of Radiation), a device that produces and amplifies electromagnetic radiation mainly in t.
#39. Charles H. Townes - Nobel Lecture
The ammonia (beam-type) maser. Molecules diffuse from the source into a fo- cusser where the excited molecules (open circles) are focused into a cavity and ...
#40. A triple cavity ammonia maser. - Scholarship at UWindsor
The lin e shape of an ammonia maser, based on th e p rin c ip le ... understanding of th e ammonia maser, is f i r s t developed, then the.
#41. Ammonia maser clock - Encyclopedia - The Free Dictionary
Looking for ammonia maser clock? Find out information about ammonia maser clock. ammonia clock McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, ...
#42. Phys. Rev. 107, 1728 (1957) - Experimental Determination of ...
Experimental Determination of the Noise Figure of an Ammonia Maser. J. P. Gordon and L. D. White. Phys. Rev. 107, 1728 – Published 15 September 1957.
#43. The Maser
masers \vas gaseous ammonia; the latest models make use of crystals. The 50-foot radio telescope at the. Naval Research Laboratory in.
#44. Meaning of Ammonia maser in Hindi - HinKhoj Translation
Ammonia maser meaning in Hindi : Get meaning and translation of Ammonia maser in Hindi language with grammar,antonyms,synonyms and sentence usages.
#45. 7-3 - Ammonia Maser - Fisica Quantica I - 4 - Passei Direto
Veja grátis o arquivo 7-3 - Ammonia Maser enviado para a disciplina de Fisica Quantica I Categoria: Resumo - 4 - 85223389.
#46. Ammonia MASER, First Atomic Clock Stock Photo - Alamy
Download this stock image: Ammonia MASER, First Atomic Clock - HRJK5P from Alamy's library of millions of high resolution stock photos, illustrations and ...
#47. New Ammonia Masers in the High-mass Star-forming Region ...
We report a systemic search for nonmetastable NH 3 masers toward a high-mass star-forming region Sgr B2(N) using the Shanghai 65 m Tianma radio telescope ...
#48. ammonia maser clock – Chinese translation - Multitran
Google | Forvo | + · ammonia maser clock · tech. 氨微波激射钟 · Add | Report an error | Get short URL | Language Selection Tips.
#49. A.K. Band E.S.R. spectrometer using an Ammonia Maser as a ...
Collier, Richard (1966) A.K. Band E.S.R. spectrometer using an Ammonia Maser as a Pre-Amplifier. University of Southampton, Doctoral Thesis, 237 ...
#50. Ammonia Maser, First Atomic Clock - Pixels
Ammonia Maser, First Atomic Clock is a photograph by NIST/Science Source which was uploaded on August 3rd, 2015. The photograph may be ...
#51. GC6M5V7 Ammonia Maser (Traditional Cache) in New York ...
Ammonia Maser. A cache by SarahLawrence Scott Message this owner. Hidden : 6/21/2016. Difficulty: 2 out of 5. Terrain: 3 out of 5. Size: Size: micro (micro).
#52. New Maser Emission from Nonmetastable Ammonia in NGC ...
We present the first detection of para-ammonia masers in NGC 7538: multiple epochs of observation of the {sup 14}NH{sub 3} (J, K) = (10, ...
#53. ammonia maser 的中文含义- dute.org - 在线词典
单词ammonia maser 的含义：[0] 氨分子微波激射器. ... ambipolar diffusion双极性扩散ammonia maser氨微波激射器氨脉泽ammonium molecular beam frequency standard铵 ...
#54. Chapter9. Amplification of light. Lasers Part 1
MASER= microwave amplification by stimulated emission of radiation ... First prototype ammonia maser and inventor Charles H. Townes. The ammonia nozzle is ...
#55. US EPA - Health & Environmental Research Online (HERO)
We present the first detection of para-ammonia masers in NGC 7538: multiple epochs of observation of the (NH3)-N-14 (J, K) = (10,8) and (9 ...
#56. Ammonia maser: Bengali translation, meaning, synonyms ...
Ammonia maser : Bengali translation, meaning, synonyms, antonyms, pronunciation, example sentences, transcription, definition, phrases · Pronunciation and ...
#57. 014 A Pair of Square Wells and the Ammonia Maser Quantum ...
Fourteenth Lecture in the Quantum Mechanics Course given in Hilary term 2010. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England ...
#58. ammonia maser — 中文翻译- TechDico辞書
包含许多翻译示例按活动分类“ammonia maser” – 英语-中文字典和智能翻译助手。
#59. THE QUANTUM HYPER-FREQUENCY AMPLIFIER ... - jstor
masers have been built and operated but all of them in the microwave region. Maser Employing Ammonia Molecule. The configuration of the ammonia molecule.
#60. Ammonia Maser, First Atomic Clock Face Mask
Ammonia Maser, First Atomic Clock Face Mask by NIST/Science Source. The face mask is machine washable. All face masks are available for worldwide shipping ...
#61. Why is an ammonia maser not useful in communication?
Why is an ammonia maser not useful in communication? (1) Because it has low power (2) Because ... is not stable (4) Because it is not ...
#62. ammonia beam maser 中文意思是什麼
ammonia : n. 【化學】氨〈NH3〉；氨水。 beam: n 1 梁，棟梁，桁條；（船的）橫梁。2 船幅；（動物、人的）體幅。3 （秤）桿，杠桿，（織機的）卷軸，... maser: n.
#63. New ammonia masers towards NGC 63341
We report the detection of new ammonia masers in the ... both spatially and in velocity with a previously detected ammonia (6,6) maser.
#64. Does the nitrogen atom move with in the molecule in an ...
This intriguing answer to Can reactions produce microwave or radio wave radiation? says (in part):. An ammonia maser qualifies as an inorganic ...
#65. Laser & Maser Differences, Uses & History - Study.com
Townes, James P. Gordon, and Herbert Zeiger at Columbia University in New York. This device used stimulated emission in a stream of energized ammonia molecules ...
#66. New Ammonia Masers in the High-mass Star-forming Region ...
We report a systemic search for nonmetastable NH 3 masers toward a high-mass star-forming region Sgr B2(N) using the Shanghai 65 m Tianma ...
#67. Reflections on the First Maser - Optics & Photonics News
Before the laser, there was the maser, and, before that, an idea: to build a microwave amplifier using ammonia molecules. Jim Gordon takes us back to the ...
#68. 美国ACCDON公司旗下品牌 - LetPub
中英对照. 氨微波激射器. ammonia maser. 学科分类. 地球科学 天文学 · 返回搜索结果. 例句. 暂无. 我来贡献例句：. Email: （选填）. 验证码: 提交.
#69. Masers and Lasers - Hyperphysics
What are the necessary preconditions for the achievement of amplification by stimulated emission of radiation? Describe the ammonia maser and the things ...
#70. Harmonic Potential with Gaussian Barrier Model for Ammonia ...
of the inversion in the operation of the maser is stressed. Ammonia has four IR active vibrational modes occuring at 3444, 3337, 1627, and 950 cm -1. The.
#71. First Ever Maser Using Ammonia and a Short History of K ...
Ammonia at 50, December 4, 2018. First Ever Maser Using Ammonia and a. Short History of K-band Receivers. Marian W. Pospieszalski ...
#72. maser在線翻譯- 英語_讀音_用法_例句 - 海词词典
海詞詞典,最權威的學習詞典,為您提供maser的在線翻譯,maser是什麼意思,maser的真人發音, ... ammonia maser 氨微波激射器氨脈澤,... maser oscillator 脈澤振蕩器, ...
#73. Laser History - Ammonia
Beam of ammonia passes through an electrostatic focuser to separate out ... name M.A.S.E.R. : Microwave Amplification by Stimulated Emission of Radiation.
#74. THE AMMONIA MOLECULE IN AN ELECT - UPR Humacao
Abstract: The ammonia maser equations with a variable electric field F0 cos(ωt), inside the cavity ,are solved numerically.
#75. Discovery of (NH3)-N-14 (2,2) Maser Emission in Sgr B2 Main
The maser spots are not spatially or kinematically coincident with any other masers in this region, or with the peaks of the radio continuum emission from the ...
#76. Maser - SlideShare
First Maser • The first maser was an ammonia- beam maser (1954) •. Monochromatic Light is a wave with frequency, wavelength and energy. The “light”. In phase • ...
#77. Ammonia Maser | Books - LearnClax
Ammonia Maser books · NITROGEN BALANCE AND UREA CYCLE · The Feynman Lectures on Physics, Vol. · Exercises for the Feynman Lectures on Physics · RENAL REGULATION OF ...
#78. New interstellar masers in nonmetastable ammonia
The (J, K) = (9, 6) inversion transition shows maser-like emission in ... These are the first definite detections of ammonia masers in space.
#79. The Solid State Maser - 1st Edition - Elsevier
The book discusses a historical account of the early developments (including that of the ammonia maser) of solid state maser; the properties of paramagnetic ...
#80. Great Experiments in Physics
However, as an amplifier the use of the ammonia maser was very limited, as the frequency of the transition can not be easily changed.
#81. The ruby maser has been preferred to the ammonia maser for
The ruby maser has been preferred to the ammonia maser for microwave amplification, because the former has: A much greater bandwidth
#82. Printed in Tokyo, Japan - NICT
An ammonia beam maser was constructed and its characteristics as an atomic frequency standard were investigated. The shift of the reference frequency with.
#83. ammonia maser - 抓鸟
ammonia maser 的解释是：氨分子钟… 同时，该页为英语学习者提供：ammonia maser的中文翻译、英英详解、单词音标、在线发音、例句等。
#84. Maser - New World Encyclopedia
Modern masers, however, emit over a broad portion of the electromagnetic spectrum. Charles H. Townes, who led ... Ammonia maser; Hydrogen maser. Gas masers.
#85. A three-year study of the OH masers in Orion-KL ... - OSTI.GOV
Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; INTERSTELLAR SPACE; MASERS; AMMONIA; CHEMICAL COMPOSITION; ...
#86. Introduction to Quantum Metrology: Quantum Standards and ...
In active atomic standard generators (e.g. hydrogen maser chambers) a ... The frequency bandwidth of signal emitted in ammonia maser is much less than that ...
#87. Microwave Engineering: Concepts and Fundamentals
13.8.2 Types of Masers These can be classified into (i) atomic beam masers which include ammonia maser, free electron maser and hydrogen maser, ...
#88. New ammonia masers towards NGC 6334I - Walsh - 2007
ABSTRACT We report the detection of new ammonia masers in the non-metastable (8,6) and (11,9) transitions towards the massive star-forming ...
#89. Definition > Maser - Futura-Sciences
Maser is the acronym for Microwave or Molecular Amplification by ... Physics The ammonia maser is the reference for atomic clocks and the hydrogen maser is ...
#90. The Laser Inventor: Memoirs of Theodore H. Maiman
In 1964, Basov, Prokhorov, and Townes shared a Nobel Prize in Physics for their ammonia maser work. The ammonia beam maser emitted radiation at a power ...
#91. Advances in Electronics and Electron Physics
Masers and Other Quantum Mechanical Amplifiers J. R. SINGER University of California, Berkeley 4, ... 85 F. Ammonia Maser; Line Width and Stability.
#92. USE OF SLOW MOLECULES IN A MASER
Several methods for improving the absolute frequency stability of a maser are considered; ... However, when a conventional system (ammonia.
#93. Lasers and Masers: a Continuing Bibliography: A Selection of ...
Investigation of beating between modes observed during the operation of an ammonia maser at the line J = 3 , K = 3 , with ** 1.25 cm .
#94. Floquet maser | Science Advances
The masers have been demonstrated in a variety of systems, such as ammonia molecules (1), hydrogen atoms (6), noble gas (15, 16), pentacene molecules (2), ...
#95. The Michigan Technic - 第 77 卷 - 第 27 頁 - Google 圖書結果
For many rea- be looked upon as a small spinning radiation be exactly equal to the dif- sons , the ammonia maser is usually used magnet .
#96. Ammonia Inversion: Classical and Quantum Models
The ammonia molecule has a trigonal pyramidal configuration with the nitrogen atom ... This transition is exploited in the ammonia maser.
ammonia maser 在 Does the nitrogen atom move with in the molecule in an ... 的推薦與評價
This intriguing answer to Can reactions produce microwave or radio wave radiation? says (in part):. An ammonia maser qualifies as an inorganic ... ... <看更多>