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BENDING EFFECT [3 records]
Record 1 - internal organization data 2014-01-06
Record 1, English
Record 1, Subject field(s)
- Audio Technology
- Piezoelectricity
Record 1, Main entry term, English
- bending 1, record 1, English, bending
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Both type [crystal and ceramic] operate on the basis of the piezoelectric effect, whereby twisting or bending of the crystal or ceramic element produces audio-output. 1, record 1, English, - bending
Record 1, French
Record 1, Domaine(s)
- Électroacoustique
- Piézoélectricité
Record 1, Main entry term, French
- flexion
1, record 1, French, flexion
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'élément cristallin [...] est formé [...] de deux cristaux de même nature, [...] montés de manière à fonctionner respectivement en torsion et en flexion. 1, record 1, French, - flexion
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-03-09
Record 2, English
Record 2, Subject field(s)
- Acoustics (Physics)
Record 2, Main entry term, English
- coincidence frequency
1, record 2, English, coincidence%20frequency
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The frequency at which a sound wave incident upon a surface has a projected wavelength equal to the length of the bending wave excited in the surface material. The effect of this "trace matching" is a marked reduction in the sound transmission loss in the frequency region in which this occurs. The frequency is a function of the angle at which the sound impinges on the surface, the surface weight, and bending stiffness of the surface. 2, record 2, English, - coincidence%20frequency
Record 2, French
Record 2, Domaine(s)
- Acoustique (Physique)
Record 2, Main entry term, French
- fréquence de coïncidence
1, record 2, French, fr%C3%A9quence%20de%20co%C3%AFncidence
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- fréquence critique 2, record 2, French, fr%C3%A9quence%20critique
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Les pertes de transmission du son par les cloisons et les planchers dépendent également de la rigidité. Les courbes des pertes de transmission de son pour les matériaux rigides présentent des creux à certaines fréquences par rapport aux pertes calculées selon la loi de masse. Cet effet dit de coïncidence entraîne souvent un ITS plus faible. Les matériaux peu rigides comme les feuilles de plomb n'ont pas de creux de coïncidence. Les fréquences de coïncidence des différents matériaux se produisent dans diverses parties du spectre acoustique, parfois en dehors de la gamme normale utilisée en acoustique du bâtiment. 2, record 2, French, - fr%C3%A9quence%20de%20co%C3%AFncidence
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2004-06-10
Record 3, English
Record 3, Subject field(s)
- Anthropology
Record 3, Main entry term, English
- atlatl
1, record 3, English, atlatl
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- spearthrower 2, record 3, English, spearthrower
correct
- spear thrower 3, record 3, English, spear%20thrower
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The Aztec word for a spear throwing stick device. 4, record 3, English, - atlatl
Record number: 3, Textual support number: 1 OBS
This projectile propulsion device preceded the bow and arrow. In general, a wooden or bone stick or board with a hand grip at one end and a spur or hook at the other end. The atlatl is used as an extension of the arm in throwing a spear or dart. The spear shaft is socketed and fits into the spur or hook of the Atlatl. Essentially the Atlatl lengthens the length of the spear thrower's arm and with loaded, spring-like, motion can provide the benefit of greater force and distance over that of the hand thrown spear. It is hypothesized that sometimes a stone weight(s)(a. k. a. : Bannerstone, Birdstone, Boatstone) was attached to the Atlatl to provide better balance or to load the device with a spring or bending effect or to diminish the "whoosh" noise created during the throwing process. 4, record 3, English, - atlatl
Record 3, French
Record 3, Domaine(s)
- Anthropologie
Record 3, Main entry term, French
- atlatl
1, record 3, French, atlatl
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- propulseur lance-javelines 2, record 3, French, propulseur%20lance%2Djavelines
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
L'atlatl a servi pendant très longtemps à lancer les javelots des chasseurs ou des guerriers. Encore maintenant, ce propulseur mécanique reste utilisé par les chasseurs de l'Alaska et d'Australie. Les hommes installent une extrémité de leur lance dans la planche juste avant de l'envoyer, pour multiplier leur force et donc la vitesse de la lance dans l'air. Grâce à l'atlatl, les lances atteignent des vitesses de 100 km/h sur une distance de 200 mètres. 1, record 3, French, - atlatl
Record 3, Spanish
Record 3, Textual support, Spanish
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