Sharp EL-9650 User Manual page 13

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: angle unit in Deg Mode and decimal point in
Float Pt Mode.
B
2nd F SET UP
Step
Specify the programme mode.
1
Select the title CAND LUX.
Select calculation of luminous
2
intensity.
Enter the values of distance,
3
angle, and illuminance.
(Display of luminous intensity)
Select calculation of illuminance.
4
Enter the values of distance,
angle, and luminous intensity.
(Display of illuminance)
EL-9650/9600c/9450/9400 Graphing Calculator
1 C 1 CL
* * * *
Key Operation
2nd F PRGM
1
ENTER
1 0
ENTER
2 0
ENTER
2
ENTER
1 0
ENTER
6 0
ENTER
4 0 0
A
*
6 0
ENTER
ENTER
0
ENTER
Display
(When using EL-9650/9600c)
7