The Science of Illumination
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Questions and Answers

What is illuminance a measure of?

  • The amount of light that hits and shines onto a surface (correct)
  • The amount of light passing through a lightbulb
  • The light emitted from a source in a given direction
  • The brightness perceived by the eye's retina

    • What does luminous intensity measure?

  • The light emitted from a source in a given direction (correct)
  • The amount of light passing through a lightbulb
  • The brightness perceived by the eye's retina
  • The amount of light that hits and shines onto a surface

    • What is brightness a perception of?

  • The subjective perception when lumens fall and reflect in the eye's retina (correct)
  • The light emitted from a source in a given direction
  • The amount of light passing through a lightbulb
  • The amount of light that hits and shines onto a surface

    • What was the traditional primary source of illumination for buildings?

    <p>Sunlight</p> Signup and view all the answers

    What does illuminance measure in terms of units?

    <p>Lumens per square meter</p> Signup and view all the answers

    What is the measure of the amount of light passing through a lightbulb?

    <p>Flux</p> Signup and view all the answers

    What does illuminance measure in terms of units?

    <p>Lumens per square meter</p> Signup and view all the answers

    What is luminous intensity a measure of?

    <p>The light emitted from the source in a given direction</p> Signup and view all the answers

    What is brightness a perception of?

    <p>The subjective perception of light by the eye's retina</p> Signup and view all the answers

    What was the traditional primary source of illumination for buildings?

    <p>Sunlight</p> Signup and view all the answers

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