Terminology!
The total amount of light emitted by a source is called this.
What is luminous flux?
This basic equation defines electrical power: Volts x Amps = ____
What are watts?
System that reflects light upward for soft ambience.
What is indirect lighting?
Main energy benefit of daylighting.
What is reducing electric lighting use?
Measured in Kelvins, describes warm vs. cool light.
What is color temperature?
The unit "candela" measures how strong light is in a specific direction.
What is luminous intensity?
This modern light source lasts up to 100,000 hours and is highly energy efficient.
What is an LED?
Most common and cost-effective, but prone to glare.
What is direct lighting?
Horizontal element used to redirect light inside.
What is a light shelf?
Index comparing color accuracy to daylight.
What is CRI?
The term for how accurately a light source reveals colors compared to daylight.
What is CRI(Color Rendering Index)?
Illuminance is measured in ___
Distributes light both upward and downward.
What is direct-indirect lighting?
Vertical fins/screens control glare on façades facing these directions.
What are east/west?
2700K is considered this color tone.
What is warm light?
Measured in Kelvins, this value determines whether light looks warm or cool.
What is color temperature?
A recessed luminaire is a lighting unit within finished ceiling that hides ___ in a hidden ceiling.
What is Hardware?
Ceiling obstruction checks are crucial for these fixtures.
What are pendant lights?
Roof system using clerestory or sawtooth glazing.
What is top lighting?
Retail or gallery lighting often requires CRI of this minimum.
What is 90+?
The ratio of lumens to watts indicates this performance characteristic of a light source.
What is efficacy?
True or false: When installing a surface-mounted luminaire the main consideration is the weight of the fixture.
What is true?
Dark ceiling effect in direct lighting.
What is the cave effect?
Daylight zone depth = this multiplier of window head height.
What is 2× the height?
TM-30 includes fidelity, gamut, and this color shift factor.
What is chroma shift?