Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Variables Affecting Phosphorescence and Fluorescence

Variables Affecting Phosphorescence and Fluorescence

Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...

Light as Energy

Light as Energy

The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit less...

Photoreceptors and Plant Responses to Light

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.

Photoluminescence: Applications

Photoluminescence: Applications

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Ten years of a gender identity service for children and adolescents in Germany: demographic and clinical patterns.

European child & adolescent psychiatry·2026

Same author

Physical activity and mental health in children and adolescents during and after the COVID-19 pandemic: findings from the six-wave German COPSY study.

Frontiers in sports and active living·2026

Same author

Effects of human-centric lighting on performance in the attentional network test (ANT) and on perceived stress.

Physiology & behavior·2026

Same author

Does Infant Temperament Moderate the Relationship between Very Low Birth Weight and Behavioral Problems Over Six years?

Child psychiatry and human development·2025

Same author

Onset Age and Internalizing Problems in Adolescents with Gender Dysphoria: Is There an Association?

Archives of sexual behavior·2025

Same author

Is executive attention affected by environmental lighting conditions?

PloS one·2025

Search research articles

Related Experiment Video

Updated: May 28, 2026

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation

Published on: January 24, 2025

Applicability and efficacy of variable light in schools.

Claus Barkmann¹, Nino Wessolowski, Michael Schulte-Markwort

¹Center for Psychosocial Medicine, Clinic for Child and Adolescent Psychiatry, Psychotherapy, and Psychosomatics, University Medical Center Hamburg-Eppendorf, Germany. barkmann@uke.de

Physiology & Behavior

|October 18, 2011

Summary

Variable lighting (VL) in classrooms improved student attention and reading speed. This lighting strategy shows promise for enhancing the learning environment in schools.

More Related Videos

An Experimental Approach to Investigating Effects of Artificial Light at Night on Free-Ranging Animals: Implementation, Results, and Directions for Future Research

An Experimental Approach to Investigating Effects of Artificial Light at Night on Free-Ranging Animals: Implementation, Results, and Directions for Future Research

Published on: February 2, 2022

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

Related Experiment Videos

Last Updated: May 28, 2026

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation

Published on: January 24, 2025

An Experimental Approach to Investigating Effects of Artificial Light at Night on Free-Ranging Animals: Implementation, Results, and Directions for Future Research

An Experimental Approach to Investigating Effects of Artificial Light at Night on Free-Ranging Animals: Implementation, Results, and Directions for Future Research

Published on: February 2, 2022

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

Area of Science:

Educational Psychology
Environmental Science
Human Factors Engineering

Background:

Existing research on lighting primarily focuses on adult workplace performance.
Limited empirical data exists on the impact of lighting on school children's learning within classrooms.

Purpose of the Study:

To investigate the effects of variable lighting (VL) on student performance and attitudes in a classroom setting.
To assess the impact of adjustable illuminance and color temperature on learning outcomes.

Main Methods:

A nine-month study involving two schools, with intervention and control groups in parallel classrooms.
Utilized standardized tests for attention and reading speed/comprehension, alongside student and teacher surveys.

Main Results:

Students demonstrated fewer errors, especially omissions, on attention tests under the VL 'Concentrate' program.
Significant improvements were observed in reading speed; reading comprehension showed a positive but not statistically significant increase.
No significant changes were noted in achievement motivation or classroom atmosphere.

Conclusions:

Variable lighting (VL) positively impacts specific student performance metrics like attention and reading speed.
VL is perceived positively by students and teachers, suggesting its potential utility in optimizing school learning conditions.