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What are the beam angles for Lamp #1 and Lamp #2 respectively?

What are the beam angles for Lamp #1 and Lamp #2 respectively?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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What are the beam angles for Lamp #1 and Lamp #2 respectively?

The image illustrates a comparison between two lamps, Lamp #1 and Lamp #2, demonstrating how the beam angle and light fixture distance impact the illuminated surface diameter. **Key Elements:** - **Lamp #1:** - Positioned with a certain beam angle (φ). - The light fixture distance from the surface is marked as D1. - The illuminated surface created by this lamp is depicted as circle A1. - **Lamp #2:** - Also has the same beam angle (φ). - The light fixture distance is greater, marked as D2. - The corresponding illuminated surface is shown as circle A2. - **Illuminated Surface Diameter:** - Labeled as A3, indicating the horizontal distance across the illuminated area from Lamp #1. **Diagram Explanation:** - Both lamps share the same beam angle, indicated by the angles of the lines representing the light spread. - The diagram shows how increasing the distance (from D1 to D2) between a lamp and the surface results in a larger illuminated area on the surface (from A1 to A2). - This concept illustrates the practical implications of beam angles and fixture distances on lighting design, highlighting how adjustments can influence the area coverage.
Transcribed Image Text:The image illustrates a comparison between two lamps, Lamp #1 and Lamp #2, demonstrating how the beam angle and light fixture distance impact the illuminated surface diameter. **Key Elements:** - **Lamp #1:** - Positioned with a certain beam angle (φ). - The light fixture distance from the surface is marked as D1. - The illuminated surface created by this lamp is depicted as circle A1. - **Lamp #2:** - Also has the same beam angle (φ). - The light fixture distance is greater, marked as D2. - The corresponding illuminated surface is shown as circle A2. - **Illuminated Surface Diameter:** - Labeled as A3, indicating the horizontal distance across the illuminated area from Lamp #1. **Diagram Explanation:** - Both lamps share the same beam angle, indicated by the angles of the lines representing the light spread. - The diagram shows how increasing the distance (from D1 to D2) between a lamp and the surface results in a larger illuminated area on the surface (from A1 to A2). - This concept illustrates the practical implications of beam angles and fixture distances on lighting design, highlighting how adjustments can influence the area coverage.
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