Podcast
Questions and Answers
What does the candela measure?
What does the candela measure?
- Light falling on a surface
- Light intensity perceived by the human eye
- Luminous flux
- Intensity (correct)
How is illuminance measured?
How is illuminance measured?
- In lux (correct)
- In lumens
- In candela
- In watts
What does one lux correspond to?
What does one lux correspond to?
- One joule per square meter
- One watt per square meter
- One candela per square meter
- One lumen per square meter (correct)
Which of the following locations typically has an illuminance of 500 lux?
Which of the following locations typically has an illuminance of 500 lux?
In the context provided, what action should be taken if the required Lux was 500 Lux but the measured Lux is lower?
In the context provided, what action should be taken if the required Lux was 500 Lux but the measured Lux is lower?
If a light source delivers 2000 lm and the distance from the source is doubled, what happens to the lux at that distance?
If a light source delivers 2000 lm and the distance from the source is doubled, what happens to the lux at that distance?
Which light fixture would be most suitable for high bay factory or warehouse lighting installations?
Which light fixture would be most suitable for high bay factory or warehouse lighting installations?
What is the primary benefit of modifying the beam angle of a light fixture?
What is the primary benefit of modifying the beam angle of a light fixture?
Which of the following light fixtures would be the most energy-efficient replacement for a 400W metal halide or sodium high bay light?
Which of the following light fixtures would be the most energy-efficient replacement for a 400W metal halide or sodium high bay light?
Which light fixture would be most suitable for street or outdoor area lighting?
Which light fixture would be most suitable for street or outdoor area lighting?
According to the information provided, which light fixture would be most suitable for general domestic and task lighting applications?
According to the information provided, which light fixture would be most suitable for general domestic and task lighting applications?
Which light fixture would be most suitable for office ceiling panel installations?
Which light fixture would be most suitable for office ceiling panel installations?
What is the formula used to calculate the area illuminated by a beam?
What is the formula used to calculate the area illuminated by a beam?
If the beam angle is 30, what is the value of the tangent of half the beam angle?
If the beam angle is 30, what is the value of the tangent of half the beam angle?
What is the area illuminated by the beam at a distance of 4 meters?
What is the area illuminated by the beam at a distance of 4 meters?
What is the lux value of the light source with 1500 lumens and an illuminated area of 3.60 m^2?
What is the lux value of the light source with 1500 lumens and an illuminated area of 3.60 m^2?
If the required lux level is 500 lx, what is the BEST way to achieve this?
If the required lux level is 500 lx, what is the BEST way to achieve this?
