214 research outputs found
Il «vivo lume» della prospettiva nella poesia di Alessandro Parronchi
No full textGiovanna Ioli propone un discorso critico dell’opera poetica di Alessandro Parronchi, mettendo in risalto il tema della «prospettiva», che rappresenta la matrice della storia in versi dell”autore fiorentino. Studioso dei fenomeni della visione, dello specchio, Parronchi ha grande competenza della storia e della fenomenologia di questo tema, documentata da una serie di saggi teorici d’arte e di letteratura. Tali interventi, a partire dagli Study sulla ‘dolce’ prospettiva del 1964, che comprendono anche un capitolo importante sulla Commedia di Dante, rappresentano un discorso di metodo e si riflettono a tutto campo sull’opera di Parronchi, fino a diventare uno strumento fondamentale di lettura per le sue Poesie.Giovanna Ioli suggests a critical analysis of the poetical work of Alessandro Parronchi. She underlines the theme of the «perspective», which represents the poetical background of the Florentine author. Parronchi, who has investigated thephenomena of the vision, the mirror, is an expert of the history and phenomenology of this subject and his authority is proved by a series of the theorical essays on art and literature. These speeches, starting from the Study sulla ‘dolce’ prospettiva of 1964, include also an important chapter on the Commedia by Dante. They represent a treatise of method and have an all round reflection on Parronchi’s work so to become an essential instrument to understand his Poesie
Il "vivo lune" della prospecttiva nella poesia di Alessandro Parronchi
No full textGiovanna Ioli propone un discorso critico dell'opera poetica di Alessandro Parronchi, mettendo in risalto il tema della «prospettiva», che rappresenta la matrice della storia in versi del'autore fiorentino. Studioso dei fenomeni della visione, dello specchio, Parronchi ha grande competenza della storia e della fenomenologia di questo tema, documentata da una serie di saggi teorici d'arte e di letteratura. Tali interventi, a partire dagli Study sulla "dolce" prospettiva del 1964, che comprendono anche un capitolo importante sulla Commedia di Dante, rappresentano un discorso di metodo e si riflettono a tutto campo sull'opera di Parronchi, fino a diventare uno strumento fondamentale di lettura per le sue Poesie.Giovanna Ioli suggests a critical analysis of the poetical work of Alessandro Parronchi. She underlines the theme of the «perspective», which represents the poetical background of the Florentine author. Parronchi, who has investigated thephenomena of the vision, the mirror, is an expert of the history and phenomenology of this subject and his authority is proved by a series of the theorical essays on art and literature. These speeches, starting from the Study sulla "dolce" prospettiva of 1964, include also an important chapter on the Commedia by Dante. They represent a treatise of method and have an all round reflection on Parronchi¿s work so to become an essential instrument to understand his Poesie
Spectroscopy Of The Excited C-o Stretching Q Branch Of 13cd3oh: Measurement And Assignment Of New Fir Laser Lines
No full textThe Q branch of the C-O stretching fundamental band of 13CD3OH has been investigated. Starting from a high resolution (4 × 10-3cm-1) infrared Fourier transform spectrum and using a waveguide CO2 laser of 300 MHz tunability and an acoustooptic modulator for an extension of ±90 MHz, 31 new FIR laser lines have been observed. The related absorptions have been measured by means of optoacoustic detection. The frequency of one new FIR laser line was also measured. Eight tentative assignments are proposed for the IR absorption and FIR laser emissions. © 1992.332133139Moraes, Scalabrin, Pereira, Di Lonardo, Fusina, (1991) Infrared Phys., 31, p. 365J.C.S. Moraes, A. Scalabrin, D. Pereira, G. Carelli, N. Ioli, A. Moretti and F. Strumia, Appl. Phys. B. SubmittedTelles, Moraes, Scalabrin, Pereira, Moretti, Strumia, (1991) Appl. Phys. B, 52, p. 36Carelli, Ioli, Moretti, Moruzzi, Pereira, Strumia, (1991) Int. J. Infrared Millimeter Waves, 12, p. 449Inguscio, Ioli, Moretti, Strumia, D'Amato, (1986) Appl. Phys. B, 40, p. 165Carelli, Ioli, Moretti, Pereira, Strumia, (1988) Appl. Phys. B, 45, p. 97Mukhopadhyay, Mollabashi, Lees, Johns, (1989) J. molec. Spectrosc., 138, p. 521Inguscio, Evenson, Petersen, Strumia, Vasconcellos, (1984) Int. J. Infrared Millimeter Waves, 5, p. 1289Ingusdo, Moruzzi, Evenson, Jennings, A review of frequency measurements of optically pumped lasers from 0.1 to 8 THz (1986) Journal of Applied Physics, 60, p. R161Kwan, Dennison, (1972) J. Molec. Spectrosc., 43, p. 291Mukhopadhyay, Lees, Lewis-Bevan, (1988) Int. J. Infrared Millimeter Waves, 9, p. 54
OPTICAL-PROPERTIES OF YBACUO THIN-FILMS AT FAR-INFRARED MONOCHROMATIC LIGHT
No full textBy using monochromatic sources of radiation we measured the reflectivity and transmission vs temperature behavior of YBaCuO thin film in the Far Infrared region in the range 300-20 K. A smooth change of optical properties is observed from critical temperature down to 40 K with an evident reduction of the losses for all the frequencies we examined. To analyze the use of YBaCuO films as semireflecting elements in submillimeter devices we made a preliminary study of the optical properties of the substrate in the same conditions. The permanence of the sample in a superconducting phase can be deduced from its room-temperature transmittance, as it changes drastically if some degeneracy occurs in the film
MEASUREMENTS AND ASSIGNMENTS OF NEW LARGE OFFSET CD3OH FIR LASER LINES
No full textBy using an acoustooptic modulator we extend the 300 MHz tunability of a waveguide CO2 laser to 480 MHz. The CD3OH was optically pumped by the 10R(32), 10R(34), and 10R(36) CO2 laser lines, and 17 new FIR laser lines were discovered. The Stark effect on previously known FIR laser lines was investigated, and some tentative FIR laser lines assignments are suggested
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