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solid angle
prostorski kot
Last Update: 2017-04-06
Usage Frequency: 3
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solid angle unit
enota za prostorski kot
Last Update: 2014-11-21
Usage Frequency: 3
Quality:
means the angles which determine the field of the minimum solid angle in which the apparent surface of the lamp must be visible.
pomeni kote, ki določajo polje najmanjšega ostrega kota, v katerem mora biti vidna svetleča površina žarometa ali svetilke v smeri referenčne osi.
it describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle.
navaja količino svetlobe, ki gre skozi določeno površino ali jo ta površina oddaja in seva v dani prostorski kot.
that field of the solid angle is determined by the segments of the sphere of which the centre coincides with the centre of reference of the lamp and the equator is parallel with the ground.
to območje prostorskega kota je določeno s krogelnimi izseki, katerih središče sovpada z referenčnim središčem svetilke, ekvator pa je vzporeden s tlemi.
‘angles of geometric visibility’ means the angles which determine the field of the minimum solid angle in which the apparent surface of the lamp is visible.
„koti geometrijske vidnosti“ pomeni kote, ki določajo območje najmanjšega prostorskega kota, v katerem je vidna svetleča površina svetilke vidna.
the steradian is the solid angle which has its apex at the centre of a sphere and which describes on the surface of the sphere an area equal to that of a square having as its side the radius of the sphere.
steradian je prostorski kot z vrhom v središču krogle, ki na njeni površini omejuje ploskev s ploščino, ki je enaka kvadratu kroglinega polmera.
cil values lower than those shown in the last two columns of the above table are not permissible within the solid angle having the reference centre as its apex and bounded by the planes intersecting along the following lines:
vrednosti koeficienta svetilnosti (cil), ki so manjše od navedenih v zadnjih dveh stolpcih gornje tabele, niso dovoljene znotraj prostorskega kota, katerega vrh je referenčno središče svetleče površine in ki je omejen z ravninama, ki imata presečišče v naslednjih črtah:
‘directional lamp’ means a lamp having at least 80 % light output within a solid angle of π sr (corresponding to a cone with angle of 120°);
„usmerjeno svetilo“ pomeni svetilo, ki najmanj 80 % izhodne svetlobe oddaja v prostorskem kotu π sr (kar ustreza stožcu s kotom 120°);
the steradian is the solid angle of a cone which, having its vertex in the centre of a sphere, cuts off on the surface of the sphere an area equal to that of a square with sides of length equal to the radius of the sphere.
steradian je prostorski kot stožca z vrhom v središču krogle, ki na njeni površini odseka ploskev s ploščino, ki je enaka kvadratu, katerega stranice imajo dolžino, enako polmeru krogle.
radiance (l): the radiant flux or power output per unit solid angle per unit area, expressed in watts per square metre per steradian (w m—2 sr-1);
energijska sevnost, radianca (l): sevalni tok ali izstopna moč na prostorski kot na enoto površine, izražen v vatih na kvadratni meter na steradian (w m-2 sr-1);
‘luminous intensity’ (candela or cd) means the quotient of the luminous flux leaving the source and propagated in the element of solid angle containing the given direction, by the element of solid angle;
„svetilnost“ (kandela ali cd) pomeni količnik med svetlobnim tokom, ki zapusti vir in se razširi v elementu prostorskega kota v dani smeri, in elementom prostorskega kota;
‘directional light source’ (dls) means light sources having at least 80 % light output within a solid angle of π sr (corresponding to a cone with angle of 120 °).
„usmerjeni vir svetlobe“ (dls) pomeni vire svetlobe, ki imajo najmanj 80 % izhodne svetlobe v prostorskem kotu π sr (kar ustreza stožcu s kotom 120°);