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1. |
Record Nr. |
UNISA996392963303316 |
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Autore |
Paracelsus <1493-1541.> |
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Titolo |
Paracelsus his Archidoxes [[electronic resource] ] : comprised in ten books, disclosing the genuine way of making quintessences, arcanums, magisteries, elixirs, &c. Together with his books of renovation & restauration. Of the tincture of the philsophers. Of the manual of the philosophical medicinal stone, Of the virtues of the members. Of the three principles. And finally his seven books, of the degrees and compositions of receipts, and natural things. / / Faithfully and plainly Englished, and published by J.H. Oxon |
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Pubbl/distr/stampa |
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London, : Printed for W.S. and are to be sold by Samuel Thomson at the Bishops Head in Pauls Church-Yard, 1661 |
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Descrizione fisica |
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[8], 158, [2], 111, 108-171, [1] p |
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Altri autori (Persone) |
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J. H <b. 1600 or 1601.> (John Harding) |
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Soggetti |
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Alchemy |
Medicine, Magic, mystic, and spagiric |
Occultism |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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A translation, by John Harding, of: Paracelsus. Archidoxa. |
A reissue, with cancel title page, of the 1660 edition. |
Errata and contents leaves follow text. |
Reproduction of the original in the British Library. |
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Nota di contenuto |
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The Archidoxis of Theophrastus Paracelsus -- A book of renovation and restauration -- Of the tincture of the philosophers -- The manual of the stone of the philosophers -- Of the virtues of the members -- Of the three first essences -- The degrees and compositions of receipts and natural things. |
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Sommario/riassunto |
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2. |
Record Nr. |
UNISA996280847503316 |
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Titolo |
IEEE No 269-1966 : IEEE Proposed Method for Measuring Transmission Performance of Telephone Sets / / IEEE |
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Pubbl/distr/stampa |
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Piscataway, NJ : , : IEEE, , 1966 |
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ISBN |
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Descrizione fisica |
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1 online resource (24 pages) |
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Collana |
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Disciplina |
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Soggetti |
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Telephone - Equipment and supplies |
Sound - Transmission - Measurement |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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The purpose of this Standard is to describe a practical and reproducible method for measuring the transmission characteristics of a telephone set, and the components thereof, by means of objective measurements in a test connection. Performance characteristics obtained using this method will approximate but will not duplicate performance under actual use conditions. The method requires a suitable Artificial Mouth. It also specifies a standard Artificial Ear, standard circuits comprising direct-current power feed and connecting loops, and a standard pressure microphone. This Standard is intended for use in measuring the transmission characteristic over the frequency range most useful for speech, e.g. 150 to 5000 hertz. It is to be used for single-frequency measurements and for measurements with continuously varying frequencies such as slow sweeps and warble bands. It is suitable also for measuring the transmission performance of conventional telephone sets equipped with handsets using carbon transmitters and used with 2-wire circuits. It is not intended to be applicable to special devices such as noise-exclusion transmitters, distant-talking transmitters, insert-type receivers, or noise-exclusion receivers equipped with large ear pads. This Standard is based on a standard pressure microphone to measure the sound field produced by the Artificial Mouth and to measure the pressure developed in the Artificial Ear. Drawings and test |
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procedures as well as other pertinent information have been included as an aid to designers in setting up the tests.performance. |
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