Concept

Electric light

Related publications (112)

LTCC integrated miniature Rb discharge lamp module for stable optical pumping in miniature atomic clocks and magnetometers

Herbert Shea, Peter Ryser, Thomas Maeder, Fabrizio Vecchio, Vinu Lalgudi Venkatraman

We report here on an integrated mini-lamp module (15x26x4 mm3) with a microfabricated rf-powered Rb dielectric barrier discharge (DBD) lamp (10x10x3 mm3) positioned on top of a 0.6 mm thick (thickness adjustable) 4-layer LTCC (Low Temperature Co-fired Cera ...

IEEE2012

Influence of shading control patterns on the energy assessment of office spaces

Marilyne Andersen

This work reviews existing models of control patterns for occupant-shading interactions in office buildings, and studies their influence in terms of energy demand when comparing transparent façade alternatives. It starts by establishing a review of visual ...

Elsevier2012

Comprehensive Performance Metrics for Complex Fenestration Systems Using a Relative Approach

Buildings account for over 40% of the energy consumption in the United States, nearly 40% of which is attributed to lighting. The selection of a fenestration system for a building is a critical decision as it offsets electric lighting use as well as impact ...

2012

Effects of prior light exposure on early evening performance, subjective sleepiness, and hormonal secretion

Jean-Louis Scartezzini, Mirjam Münch, Friedrich Linhart, Apiparn Borisuit

In sighted humans, light intensity, timing, exposure duration, and spectral composition of light are important to entrain the endogenous circadian pacemaker to the 24-h day-night cycle. We tested the impact of two realistic office lighting conditions durin ...

American Psychological Association2012

Prescribing for Daylight: Can We Account for the Disparate Measures Within A Unified Framework?

Marilyne Andersen

The potential for a building design to provide daylight for general illumination was, until very recently, evaluated using only the daylight factor, i.e. a ratio of internal to external illumination under a single standardised overcast sky. Other known eff ...

2012

Evening office lighting - visual comfort vs. energy efficiency vs. performance?

Jean-Louis Scartezzini, Friedrich Linhart

During the study presented in this article, we compared two highly energy-efficient lighting scenarios for evening office lighting (i.e. electric lighting that is typically used for approxiamately 2 h in the evening). The first of these lighting scenarios ...

Elsevier2011

A Novel Louver System for Increasing Daylight Usage in Buildings

Marilyne Andersen

Advanced daylighting systems can be effective in increasing light levels in building spaces and reducing energy consumption due to electric lighting. However, a recurring issue found in most existing daylighting systems is the necessity of coupling the lig ...

2011

Espace & Lumière: Unité d'Enseignement M | Space & Light: Teaching Unit M

Marilyne Andersen, Bernard Paule

The UE M course aims to improve the students’ ability to see, to plan and to design light in architecture. The purpose is to consider light as a resource, a raw material, and to understand how it can be used to emphasize architectural concepts. The student ...

EPFL Reprographie2011

Advanced Window and Lighting Technologies in net Zero Energy Buildings

Jean-Louis Scartezzini

Light has an important visual and non-visual impact on humans. Most of our information exchange, especially within office working spaces, occurs through it, our circadian rhythms are directly influenced by its presence. On the other hand, artificial lighti ...

2011

Visibility of dichalcogenide nanolayers

Andras Kis, Helmuth Berger, Branimir Radisavljevic, Mohamed Malik Benameur

Dichalcogenides with the common formula MX2 are layered materials with electrical properties that range from semiconducting to superconducting. Here, we describe optimal imaging conditions for the optical detection of ultrathin, two-dimensional dichalcogen ...

Institute of Physics2011

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.