EL-9900 Graphing Calculator Calculating …

1 EL- 9900 Graphing CalculatorCalculating illuminance and Luminous IntensityEnter the luminous intensity of the luminous source, the distance, and the angle between the perpendicular line and light ray, to find the illuminance of the illuminated , find the luminous intensity of the source from the illuminance of the illuminated LIST(REAL MODE)Selection of typeTo subroutineTo subroutineStartEndReturnSubroutinestartC ANDELALUXDISTANCEYNE ntry ofluminous intensityCalculation ofluminous intensityEntry ofilluminanceCalculation ofilluminanceDisplay ofilluminanceDisplay ofluminous intensityEntry of distance and angleEnter 1 or calculation ofluminous calculation to illuminance or luminous or luminousintensity or luminousintensity for entry ofdistance and to calling : luminous intensity [candela]i : illuminance [lux]r : distance [m] : angle [ ] Name of parameterIKRS Contentilluminance of illuminated sideluminous intensity of luminous sourcedistanceselecting calculation type(S=1: calculation of luminous intensity)(S=2.)

2 Calculation of illuminance ) Name of parameter ALDC Contentangleinput of angleinput and Calculating luminous intensityinput of distanceinput and Calculating illuminanceDegLabel STARTClrTPrint "CANDELA=1 LUX=2 Print "SELECT 1 or 2 Input SIf S=1 Goto CANDELAIf S=2 Goto LUXGoto STARTL abel CANDELAG osub DISTANCEP rint "Input LUXI nput LL IR2 I/cos CPrint "CANDELAP rint CEndLabel LUXG osub DISTANCEP rint "Input CANDELAI nput CC KK cos /R2 LPrint "LUXP rint LEndLabel DISTANCEP rint "Input DISTANCEI nput DD RPrint "Input ANGLEI nput AA ReturnS = 2S = 1i =r2l cos l =cos r2 irAAIlluminance iLuminous Intensity l Title : CAND LUXEL- 9900 Graphing Calculator3 DisplayStepKey Operation12 Specify the programme the title CAND LUX.

3 (Display of luminous intensity)Exercise(1) Find the luminous intensity of the luminous source of distance 10m, angle 60 and illuminance 20 lux.(2) Find the illuminance of the illuminated side of distance 10m, angle 60 and luminous intensity 4000 candela. Set up condition: decimal point in Float Pt Mode. 4(Display of illuminance ) Select calculation of calculation of the values of distance,angle, and luminous the values of distance,angle, and UP2nd F1 CPRGMAENTER1 ENTER102060 ENTERENTERENTERENTERENTERENTERENTER10604 0002