Mark Lien, industry relations manager for the IES, recorded an audio version of his free-verse column written for the May 2021 issue of LD+A. Titled “Beyond Sunset,” the poem traces the trajectory of lighting history from the origins of electricity to modern day.By Illuminating Engineering Society

We recorded a special Forces of Change video interview in March 2020 to provide a report on the impact of COVID-19 on lighting professionals from the vantage point of some prominent individuals representing various roles within our industry. Moderator Mark Lien talked with Diane Borys (Noctiluca Lighting Design and Consulting), Megan Carroll (New Y…

We have recorded a special Forces of Change video interview to provide a report on the impact of COVID-19 on lighting professionals, during these difficult times, from the vantage point of some prominent individuals representing various roles within our industry. Hear from Diane Borys (Noctiluca Lighting Design and Consulting), Megan Carroll (New Y…

Harold (Hal) Wallace, the Curator of the Electricity Collection at the Smithsonian Institution’s National Museum of American History sits down with host Mark Lien for a fascinating conversation about the history of electric lighting on another edition of Forces of Change.By Illuminating Engineering Society

Dr. Karma Sawyer of the DOE is Mark Lien’s guest and they discuss where the DOE is heading in 2020 and beyond specifically with regards to lighting.By Illuminating Engineering Society

Mark Lien sits down with Dr. Robert Karlicek of LESA at RPI to discuss how Intelligent Lighting Systems can transform how people live and work.By Illuminating Engineering Society

Probably no one in North America is more responsible for energy-saving dollars in lighting than James Brodrick over the last two decades. Jim reflects with Mark Lien on his work at the DOE and what he planning to do now and into the future.By Illuminating Engineering Society

The inventor and Noble Prize winner Shuji Nakamura discusses his invention of blue pump yellow phosphor white light LEDs and what he sees going forward.By Illuminating Engineering Society

Eunice Noell-Waggoner sits down with Terry McGowan and discusses her career signature research and crusade for more empathy in lighting design for seniors and those with low vision.By Illuminating Engineering Society

The purpose of this article is to evaluate from a biological standpoint the rationale for the establishment of a Circadian Lighting standard put forward by UL under the direction of Dr. Mark Rea of the Lighting Research Center at Rensselaer Polytechnic Institute. This critique is limited in scope but also applies to utilization of the Circadian Sti…

Whether you call it “circadian lighting,” “biologically effective lighting,” or some other name, the principle is the same: the color and intensity of light can be used to regulate the timing of our biological clocks, or “circadian rhythms.” For architects and lighting designers, this is an opportunity to provide healthy and comfortable environment…

Mark Lien chats with IES Past President and editor of the Edison Report Randy Reid about the 20th Anniversary of the Edison Report, the importance of integrity in reporting, the invasion of the IT conglomerates into the lighting industry as well as some of the new lighting technologies that he finds fascinating.…

As our population continues to grow, farm land disappearing and an increased awareness of what goes into our produce, the need to increase yield without chemicals is a critical topic. Host Mark Lien and Dr. Pocock discuss using LEDs (irradiance, spectral composition, timing, duration) to program photochemical, photosynthetic, development and bioche…

As if our lighting community needs more disruption, we are poised for a radical change in how we make, distribute and sell our products. We have experienced two digital revolutions already in communication and computation. We can communicate instantly across the globe at no charge and computers are integrated into our lives. Digital fabrication is …

Christopher “Kit” Cuttle delivers a compelling paradigm shift on how lighting is measured as well as reminisces about his career, thus far. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leaders, teachers and practitioners and others. The interviews, conduct…

Mark Rea discusses the state of lighting education today, the need for revised discussion on lighting metrics, levels and need for action now. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leaders, teachers and practitioners and others. The interviews, cond…

Rita Harrold became the first woman President of the IES in 1985, seventy-nine years after the IES was established. Rita discusses her trailblazing career which includes a long turn as the IES Director of Knowledge. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized tho…

Howard Brandston regales us with his discussion of how he got his start in lighting, his career with the IES and his approach to lighting design and education. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leaders, teachers and practitioners and others. The…

Sam Berman recounts his path into lighting research, recent changes of the energy codes and the science of lighting. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leaders, teachers and practitioners and others. The interviews, conducted by IES Fellow Daniel…

David DiLaura offers a captivating reflection on his career in lighting including the changes in teaching requirements and expectations and his extensive work to develop the 10th Edition Lighting Handbook. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leade…

Jan Moyer literally wrote the book on Landscape Lighting. She sits down with host Dan Blitzer and expounds on her career path and what she is up to presently. Trailblazers and Icons is an inspiring and informative series of interviews with some of the lighting communities’ most recognized thought leaders, teachers and practitioners and others. The …

Douglas Steel, Ph.D. is a Translational Scientist with NeuroSense, a medical technology consultancy developing novel phototherapies for treating a number of nervous system conditions including PTSD, sensory processing disorders, migraine headache, depression, and emotional and stress-related conditions. Dr. Steel received his PhD in Biomedical Scie…

Numerous medical studies have shown that exposure to blue light at night suppresses the production of melatonin by the pineal gland in our brains and so disrupts our circadian rhythms. As a result, we may have difficulty sleeping. It is therefore only common sense that we should specify warm white (3000 K) light sources wherever possible, especiall…

These are transformational times for the lighting industry. The cost of LED-based products has dropped dramatically. At the same time, increased sophistication and capabilities of tunable LED arrays, controls, and sensors now enable the commissioning of platforms that can precisely control light intensity, correlated color temperature, and relative…

With his co-founder and co-host Michael Colligan, Greg Ehrich started the Get a Grip Podcast in February 2017. Recognizing that there is a need in the lighting industry for a forum for people to get together and discuss many interesting subjects and issues, Get A Grip was born. At the time of this post Get a Grip is posed to pass 30 podcasts. Greg …

This podcast features two key members of the ANSI/ASHRAE/IES 90.1 Lighting Subcommittee that establishes lighting power density levels for this foundational standard. The discussion reveals and explains to our lighting community a new project that is funded by ASHRAE, IALD, BC Hydro and the IES. Project tasks will support the work of the 90.1 stand…

There is a common-sense argument being presented in the popular media that since humans evolved under sunlight, our bodies must surely make use of all the solar energy available to us. Given that more than 50 percent of this energy is due to near-infrared radiation, we are clearly risking our health and well-being by using LED lighting that emits n…

Discussions about Lighting as a Service (LaaS) are no longer focused on whether it will evolve into an essential aspect of future lighting projects, but rather on how many billions of dollars will be involved and how soon it will become a common offering. Until recently “As a Service” companies did not focus on or understand the lighting community.…

Presentation: Randy Burkett, FIALD, FIES; Kevin J. Flynn, FAIA, NCARB, IES; Carol McGlogan; Craig Casey; Kristina K. Martin, PE, LC, LEED AP A group of industry leaders representing many facets of the lighting industry; Architects, Distributors, Engineers, Lighting Designers, Lighting Controls Specialists and Lighting Manufacturers discuss the ligh…

Presentation: Randy Burkett, FIALD, FIES; Kevin J. Flynn, FAIA, NCARB, IES; Carol McGlogan; Craig Casey; Kristina K. Martin, PE, LC, LEED AP A group of industry leaders representing many facets of the lighting industry; Architects, Distributors, Engineers, Lighting Designers, Lighting Controls Specialists and Lighting Manufacturers discuss the ligh…

The first presentation in the Indispensable Lighting Series is a two-hour, two-part video entitled, Architecture for Light by Kim and Paul Mercier. In Part One, Heirloom Ideas, Modern Semantics and Current Realizations, Kim and Paul examine design considerations for creating the built environment that embrace light.…

The first presentation in the Indispensable Lighting Series is a two-hour, two-part video entitled, Architecture for Light by Kim and Paul Mercier. In Part Two, Lighting Design in the Era of Energy Codes, the authors discuss the lighting design process, integrated design, and explore case studies involving these concepts.…