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INDEX-Introductory considerations-First partChap. 1Plan of the workChap. 2The origins and the evolution of the bow instrumentsChap. 3New approach on the physical-acoustics problems of the violinChap. 4The static energetic potential (in the rest instrument) and kinetic (in the stimulated instrument)-Second partChap. 5Choice and use of the wood assigned to the construction of the bow instruments. Anatomy and technology elements of the wood- The cell and his functions in the vegetables- Elements that composed the vegetable cell- Dimensions of the vegetable cell- Vegetable physiology- Metabolism of the plants- Tissue vegetable (xylem and phloem) and mechanic tissue- Annual rings of growth- Inside morphology of the woody stem or trunkChap. 6Vegetable kinds used in LUTHERY- The coniferous- The angiospermsChap. 7Physical characteristics of the wood- Specific weight of some woods- Basal density of the wood- Limit of elasticity- Variations from the hygrometrics changes- Anomalies, degradation and merits of the wooden tissueChap. 8The temperament of the wooden tissue- The ( D T ) in the bow instrument stimulated to emit sound6Chap. 9Thicken on the wooden tissue: Causes and effectsChap. 10Brief reflections on the varnish-Third PartCap. 11Sound and succession of the oscillatory motion- Production and propagation mechanisms of the sound- Characteristics of the sound- Pure sound and complex sound- The sound propagation- Reflection of the sonorous waves- Resonance- Vibration of the foils or plates- Dynamics of the oscillatory motion in the bow instrumentChap. 12The parabolic curves evolution in the bow instruments- Model types- Conclusive considerations-Fourth PartChap. 13New method finalities for the CHECK-UP on ancient and modern bow instruments- The check-upChap. 14Intervention’s possibilities related to the interactions between bridge, bass-bar, and sound-post- Corrective interventions- From the theory to the practical application-Fifth PartChap. 15Specific acoustic phenomenons in the bow instruments- Modern science and ancient empiricism- Harmonicas combinations and interference effects of the differential resultantChap. 16The baroque violin- The sound of the baroque bow instrument- Considerations on the normal evolution of the baroque and modern violin- Energetic differential relationships between baroque and modern bow instrument-Conclusive considerations-Bibliography