Research

  By Brian Liebel & Rick Utting, DarkSky International, Tucson, AZ. Executive Summary Upward-emitted outdoor light has long been identified as a source of atmospheric light pollution, a.k.a. sky glow. This form of light pollution is an obvious contributor to the brightening of the nighttime sky and can be observed as glowing domes of light [...]

  What Is Quantum Biology? Quantum biology is an emerging scientific field that studies the role of quantum mechanics—the physics of particles at the atomic and subatomic levels—in living organisms. It explores how biological processes rely on phenomena like quantum tunneling and coherence, rather than just classical physics and standard chemistry. Researchers focus on a variety of [...]

  Researchers at CU Boulder have developed a way to make living algae emit light for much longer than the tiny flashes seen in nature, opening the door to electricity-free lighting and other “living material” applications. The team used simple chemical solutions to trigger sustained bioluminescence in Pyrocystis lunula, an algae embedded  in 3D-printable hydrogel [...]

  A Penn State University study published in Leukos has examined how U.S. museum lighting professionals are actually using modern lighting technologies, especially LEDs, and how they choose lighting based on conservation, appearance, and standards. The study creates a current, practice-based snapshot showing that LED adoption is now widespread, but guidance is still applied unevenly [...]

  Researchers at the University of Edinburgh analyzed whether ultraviolet (UV) exposure in low-sunlight regions is associated with better or worse health outcomes, focusing on deaths from cardiovascular disease, cancer, and skin cancer. Using UK Biobank data from 395,000 white European participants across the UK, they linked individual health and genetic records with estimated UV [...]

  This study used ultra–high-field 7T fMRI to examine how temporal light modulation (TLM) (aka flicker) at different frequencies activates or deactivates brain regions in healthy adults, with a particular focus on whether non-perceptible flicker still drives visual cortex responses. Participants viewed LED stimuli modulated at 50 Hz (clearly perceived as flicker) and at ≥100 [...]

  The field of optogenetics is moving from a research tool toward a potential therapeutic strategy for neurological disease, especially chronic neuropathic pain. Optogenetics works by inserting genes for light-sensitive proteins (opsins) into specific neurons so their activity can be turned up or down with precisely delivered light, more like a targeted dimmer than a [...]

  For the legible version of the above image, click here. It’s worth it. This image was created by Stig Kristiansen, a consultant on light + health in Norway. He painstakingly mapped wavelengths of light to different biological functions. The resulting complexity is the most important takeaway. His LinkedIn post about this mapping can be [...]

  Researchers have developed a new way to make ultra-narrow band, near‑infrared LEDs by “electrically powering” materials that normally do not conduct, using attached organic molecules that act as molecular antennas. The work opens a path to highly precise light sources for deep‑tissue medical imaging, optical communication, and chemical or biological sensing. Core scientific breakthrough [...]