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Understanding Light:
| Content Provider | Scilit |
|---|---|
| Author | Stiller, Michael |
| Copyright Year | 2020 |
| Description | It's important to clarify some of the terms we will use throughout this book, and in doing so develop a clearer understanding of how electric lighting works. First, let's start with the light source and luminaire. The light source, or lamp (commonly called the light bulb), produces a certain amount of visible radiant energy, or light, which we measure in lumens. The lamp, in combination with the luminaire (a fancy term for a lighting fixture), will direct and define how these lumens are projected. Some lamps and luminaires will project the lumens in an omnidirectional pattern (in all directions), like a household light bulb in a table lamp with a translucent lampshade; and some will project them as a narrow beam of light or a well-defined spot, like a reflector lamp in a directional track light. If the number of lumens is the same in both of these cases, the light striking the nearby surfaces (provided they are of an equally reflective color and equally far from the light source) will appear brighter in the case of the reflector lamp and track light, and the illuminance will be greater, as the same amount of light, or lumens, will essentially be concentrated in a smaller area. |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2011-0-16150-0&isbn=9781003151685&format=googlePreviewPdf |
| Ending Page | 14 |
| Page Count | 4 |
| Starting Page | 11 |
| DOI | 10.1201/9781003151685-3 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-12-17 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Quality Lighting for High Performance Buildings Visual and Performing Arts Light Source Reflector Luminaire Define Lumens |
| Content Type | Text |
| Resource Type | Chapter |
