"RIV/68407700:21450/14:00220167!RIV15-MSM-21450___" . "Determination of Reflectance of Some Decorative Stones Using Etalons and a Luxmeter"@en . "Brno" . "1"^^ . "N" . "Determination of Reflectance of Some Decorative Stones Using Etalons and a Luxmeter" . "Simple methodology of determinig the reflectance of light and its application to some natural stones used in architectural practice. The methodology is based on the interpolation of the value lying between two etalons for which the reflectance of light was precisely measured under laboratory conditions. For field measurements there were two illumination chambers constructed; in these chambers indirect daylight was transmitted to a stone surface. Reflectance of light from the stone surface was then measured by a luxmeter in a predetermined constant height and the result was interpolated between the values of both etalons. In copending case study 300 measurements on fifteen samples of stones was performed in this manner and resulting coefficient of reflectance of light was then calculated. Resulting coefficient is applicable for the calculation of daylighting of buildings according to the standard CSN 73 0580."@en . "1022-6680" . . . . "\u010Cern\u00E1 Hora" . . "RIV/68407700:21450/14:00220167" . "Determination of Reflectance of Some Decorative Stones Using Etalons and a Luxmeter" . . "V\u00FDzkumn\u00FD \u00FAstav stavebn\u00EDch hmot, a.s." . "Daylighting; Light Reflectance; Light Reflectance of Stone; Natural Stone"@en . "Simple methodology of determinig the reflectance of light and its application to some natural stones used in architectural practice. The methodology is based on the interpolation of the value lying between two etalons for which the reflectance of light was precisely measured under laboratory conditions. For field measurements there were two illumination chambers constructed; in these chambers indirect daylight was transmitted to a stone surface. Reflectance of light from the stone surface was then measured by a luxmeter in a predetermined constant height and the result was interpolated between the values of both etalons. In copending case study 300 measurements on fifteen samples of stones was performed in this manner and resulting coefficient of reflectance of light was then calculated. Resulting coefficient is applicable for the calculation of daylighting of buildings according to the standard CSN 73 0580." . . "1"^^ . "978-3-03835-188-7" . . . . "21450" . "Posp\u00ED\u0161il, Martin" . . "4"^^ . "10.4028/www.scientific.net/AMR.1000.306" . . . "Ecology and New Building Materials and Products 2014" . "10810" . . . . "http://www.scientific.net/AMR.1000.306" . . "2014-06-03+02:00"^^ . "Determination of Reflectance of Some Decorative Stones Using Etalons and a Luxmeter"@en . "[854CC6F3DCFF]" .