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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A cloud chamber containing air supersaturated with water vapor by sudden expansion, in which rapidly moving nuclear particles such as alpha or beta rays produced ionization tracks by condensation of vapor on the ions produced by the rays.  4, fiche 1, Anglais, - Wilson%20cloud%20chamber

Record number: 1, Textual support number: 1 CONT

Cloud chambers were first developed by Charles T.R. Wilson around 1911 for experiments on the formation of rain clouds. Wilson knew that water vapour condensed around ions, atoms which have become charged by gaining or losing electrons. However, an alpha particle, for example, which had an electric charge, would leave a trail of ions as it passed through a gas. If water vapour condensed on these ions, the track of the alpha particle would become visible as a line of water droplets.  2, fiche 1, Anglais, - Wilson%20cloud%20chamber

Record number: 1, Textual support number: 2 CONT

There are two basic types of cloud chambers in use today; (1) the expansion chamber ... which depends upon expansion of the air, within the chamber, to cool it and thus create a supersaturated atmosphere, and (2) the continuous or diffusion type chamber ..., that creates a supersaturated atmosphere by diffusion of vapor from the warm upper region of the chamber to the cooled bottom of the chamber. In both types, electrically charged ions created by nuclear particles colliding with atoms within the chamber atmosphere, serve as nuclei of condensation.  5, fiche 1, Anglais, - Wilson%20cloud%20chamber

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Chambre à nuage dans laquelle la sursaturation de la vapeur est obtenue pendant un court intervalle de temps par une détente rapide.  1, fiche 1, Français, - chambre%20de%20Wilson

Fiche 1,  Justifications,  Espagnol

Record number: 1, Textual support number: 1 DEF

Recipiente, a menudo cilíndrico, dotado de una ventana transparente y de un pistón móvil que permite que el vapor de agua en el recipiente se expanda y se condense cuando la presión disminuye al ser desplazado el pistón hacia afuera.  2, fiche 1, Espagnol, - c%C3%A1mara%20de%20Wilson

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 OBS

corrosion tests  1, fiche 2, Anglais, - mist%20cabinet

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 OBS

Les renseignements provenant de la source NUT-3 (Véhicules automobiles, lexique anglais-français) sont reproduits avec l'autorisation de l'Office des Nations-Unies à Genève.  2, fiche 2, Français, - chambre%20%C3%A0%20brouillard

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

a room for the curing of concrete into which water is sprayed in a fine mist.  2, fiche 3, Anglais, - fog%20room

Record number: 3, Textual support number: 1 CONT

Test specimens made for checking the adequacy of the laboratory mixture proportions for strength (...) shall be removed from the moulds (...) and stored in a saturated lime solution (...) or in a moist condition in a fog room at the [specified] temperature.  3, fiche 3, Anglais, - fog%20room

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Les éprouvettes confectionnées dans l'intention de vérifier l'exactitude du dosage des mélanges en laboratoire au point de vue de la résistance (...) doivent être démoulées (...) après moulage et conservées dans une solution saturée de chaux (...) jusqu'au moment de l'essai ou dans une chambre humide à la température [déterminée].  3, fiche 3, Français, - chambre%20humide

Record number: 3, Textual support number: 1 OBS

Voir la liste intitulée "Sols et béton de ciment" dans QTPA-2.  4, fiche 3, Français, - chambre%20humide

Fiche 3,  Justifications,  Espagnol