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Related Concept Videos

Design Consideration01:22

Design Consideration

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Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
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Light Acquisition02:16

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Design Example: Designing a Residential Plumbing System01:25

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Related Experiment Video

Updated: Nov 17, 2025

Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions
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Human-Centric Lighting: Foundational Considerations and a Five-Step Design Process.

Kevin W Houser1,2, Tony Esposito3

  • 1School of Civil and Construction Engineering, Oregon State University, Corvallis, OR, United States.

Frontiers in Neurology
|February 15, 2021
PubMed
Summary
This summary is machine-generated.

Human-centric lighting (HCL) offers health benefits by considering light's visual and non-visual effects. This guide clarifies HCL science and provides a design process to navigate potential hype and promote well-being.

Keywords:
alertnesscircadian light effectshuman-centric lightinglighting qualitynon-visual action of light

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Area of Science:

  • Lighting design
  • Human health
  • Environmental psychology

Background:

  • Human-centric lighting (HCL) aims to positively impact human well-being through light.
  • Distinguishing credible HCL science from marketing hype is challenging for designers.
  • Existing technical summaries lack practical design guidance.

Purpose of the Study:

  • To educate readers on how light influences human health.
  • To present a practical framework for human-centric lighting design.
  • To integrate HCL principles into existing design workflows.

Main Methods:

  • Review of scientific literature on light's effects on human health.
  • Development of a structured HCL design process.
  • Analysis of current design practices and challenges.

Main Results:

  • Clarification of the scientific basis for HCL's impact on health.
  • A systematic approach to HCL design is proposed.
  • Guidance is provided to differentiate between HCL potential and unsubstantiated claims.

Conclusions:

  • Understanding light's effects is crucial for effective HCL.
  • A structured design process can help practitioners implement HCL credibly.
  • HCL can be practically applied to enhance human health outcomes.