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Led Lighting

All articles tagged with #led lighting

science18 days ago•8 min saved

Tiny Study, Big Alarm: LEDs as the 'New Asbestos' Open Question

A 22-person office study linked to LED lighting sparked an alarm that LEDs are the 'new asbestos,' but the science remains unsettled: while photobiomodulation shows real, measurable effects in some experiments, there is no proof that ordinary LED lighting causes a population-scale health crisis. The framing grew through media and podcast discussions, and a newer, non-peer-reviewed preprint hints at metabolic changes but requires replication. Experts urge distinguishing demonstrated, plausible, and speculative claims and pushing for deeper spectral standards and independent replication before drawing broad conclusions.

via Inside Lighting|

#asbestos-framing #led-lighting #peer-review

technology1 month ago•4 min saved

From Orange to White: Satellites Record the Global LED Makeover of City Nightscapes

Astronaut Don Pettit’s ISS photos document a global shift from warm orange sodium-vapor streetlights to brighter white LEDs over the past 15 years, driven by cost and controllability. The transition changes how cities look and feel at night, with many places warming LED colors to ~3,000K after initial ~4,000K deployments; Hong Kong remains sodium-lit while nearby Shenzhen has switched to LEDs, illustrating the uneven adoption of the change.

via PetaPixel|

#city-at-night-from-space #don-pettit #led-lighting

science1 month ago•16 min saved

Skyglow Swallows the Milky Way for Over a Third of Humanity

Artificial skyglow now hides the Milky Way from more than a third of humanity, not because the galaxy has dimmed but because urban lighting brightens the night sky. A 2016 atlas using satellite radiance and 35,000 ground observations estimated that about 83% of people live under light-polluted skies, with the Milky Way’s visibility falling below a defined threshold under typical clear-sky conditions. Visibility varies by location, weather, and dark-adaptation. Skyglow results from scattered artificial light in the atmosphere, distinct from glare or light trespass. Studies show sky brightness has been rising in many places (7–10% per year in some datasets), and while LEDs offer efficiency, rebound effects and blue-rich light can worsen the problem. Solutions call for targeted, downward-facing, low-level, warm-colored lighting with controls, recognizing that the Milky Way remains—it’s the brightened air between us and it that has changed.

via Space Daily|

#astronomy #led-lighting #light-pollution

politics2 months ago•109 min saved

White House Says Vegas LEDs Made Trump’s Hair Look Fuller

White House press secretary Karoline Leavitt says Trump’s suddenly fuller hair at a Las Vegas event was caused by flattering LED lighting, suggesting lighting and camera angles can influence appearances; past reports mention hair treatments like finasteride, though current memos have not confirmed ongoing use.

via The Daily Beast|

#donald-j-trump #hair #hairstyle

science8 months ago•31 min saved

Broad-spectrum lighting boosts color-contrast vision under LEDs with lasting effects

A University College London study found that standard LED lighting (350–650 nm) can undermine visual performance by suppressing mitochondrial function, while supplementing with broad-spectrum incandescent light (400–1500+ nm) significantly improved color-contrast sensitivity across protan and tritan axes by about 25%. These improvements persisted for up to six weeks after incandescent lighting was removed. The findings imply LEDs may have systemic physiological effects via mitochondrial pathways and suggest public-health benefits from incorporating wider-spectrum lighting, despite trade-offs with energy efficiency.

via Nature|

#color-contrast #incandescent-lighting #led-lighting

science1 year ago•6 min saved

Global Light Pollution Threatens Astronomical Observations

Light pollution from urban areas, especially due to LED lighting, is increasingly impacting ground-based astronomical observatories worldwide, making it harder for astronomers to study faint celestial objects. Despite the shift to energy-efficient LEDs, overall light emissions have risen, encroaching on remote observatory sites and threatening the ability to observe the universe's faintest phenomena. Efforts are underway to protect dark skies and mitigate the effects of urban expansion and industrial activities.

via Space|

#astronomy #dark-sky-protection #ground-based-telescopes

technology1 year ago•2 min saved

Transform Your TV Experience with This $50 Black Friday Deal

The Govee TV Backlight system, which enhances the viewing experience by projecting screen colors onto the wall, is now available for $47 as part of Black Friday deals. This interactive lighting system uses a fisheye lens camera to match the TV's edge colors, creating a theater-like ambiance at home. The current price is the lowest ever recorded on Amazon, making it an ideal gift for movie and gaming enthusiasts.

via CNET|

#amazon-deals #black-friday #govee-tv-backlight

technology2 years ago•5 min saved

The Dark Side of LED Lights: A Growing Problem

LED lighting has become increasingly popular, accounting for 50% of global lighting sales. While LEDs are more energy-efficient, the total energy consumed by lighting is still rising due to increased installation. Residential properties have adopted LEDs more quickly than commercial buildings, but government policies and smart systems could encourage businesses to switch. The efficiency of LEDs continues to improve, with the potential to double within the next 20 years. However, concerns remain about the health effects of blue light emitted by LEDs. Despite the upfront cost, businesses can achieve significant financial savings by switching to LED lighting.

via BBC.com|

#commercial-buildings #cost-savings #energy-efficiency

technology3 years ago•1 min saved

"Exploring the Upgraded Design and Features of the Nothing Phone 2"

A new video and official image have revealed the design of the Nothing Phone (2), set to be launched in a week or two. The hands-on video by Marques Brownlee showcased the slightly larger size, curved glass design on the rear, and tweaked LED lighting on the back. The LED elements, known as the Glyph, have been split up into different sections, allowing for more control and functionality. The top section around the wireless charging coil now has 16 individual LEDs that can be used for volume indicators and timers. Nothing also plans to integrate the Glyph interface with third-party apps and allow for customizable ringtones and lighting effects for calls. The official unveiling of the Nothing Phone (2) is scheduled for July 11.

via 9to5Google|

#design #glyph #led-lighting

technology3 years ago•2 min saved

"Exploring the Upgraded Glyph Interface of Nothing Phone 2 in New Video"

Nothing is upgrading the Glyph interface for its upcoming Phone 2 smartphone, featuring more zones of LED lighting for granular control of lighting effects. The Phone 2 will allow third-party apps to use the light strip as a progress bar, with Uber and Zomato already signed up. Users can set an "essential app" to have its notifications illuminate the light strip. The Phone 2 maintains a similar design to its predecessor, with slight tweaks. It will come with a transparent USB-C cable, 3 years of Android updates, and 4 years of security updates, and will be available in the US.

via The Verge|

#glyph-interface #led-lighting #nothing

technology3 years ago•1 min saved

"Nothing Phone (2): Exclusive Features and Camera Samples Revealed"

A new video by Marques Brownlee showcases the design and lighting of the upcoming Nothing Phone (2). The phone features a slightly larger size, curved glass design on the rear, and tweaked LED lighting on the back. The LED elements are split up, with the strip around the wireless charging coil now divided into six individual pieces. The software provides more control over the LED zones, allowing for functions such as volume indicators and a glyph timer. Third-party apps like Uber and Zomato will also be able to utilize the LED lighting. The Nothing Phone (2) is set to be unveiled on July 11.

via 9to5Google|

#design #led-lighting #marques-brownlee

entertainment3 years ago•0 min saved

"MSG Sphere in Las Vegas Shines Bright with Dazzling Fourth of July Debut"

The MSG Sphere in Las Vegas will illuminate its exterior for the first time with a "dazzling" show on the Fourth of July, lighting up the Las Vegas skyline and revealing itself as a new global landmark. Standing 366 feet tall and 516 feet across, the MSG Sphere is the largest spherical structure in the world, featuring 580,000 square feet of fully-programmable LED lighting, making it the largest LED screen on Earth. The lighting of the Exosphere is set to begin at 8:30 p.m. on Tuesday.

via Fox 5 Las Vegas|

#entertainment #exosphere #fourth-of-july

environment3 years ago•1 min saved

Light pollution threatens to make stars invisible within two decades.

Scientists warn that increasing light pollution caused by LED lighting and other forms of lighting is rapidly worsening and may lead to a complete disappearance of the starry night sky in 20 years. The German Centre for Geosciences suggests that altering lighting can significantly improve things by concealing outside lights and directing them downward, lowering light intensity, and making sure that lights are primarily blue-white with some red and orange components. Light pollution also affects sea turtles, migratory birds, and serves as a cover for criminal activity and other human dangers.

via The News International|

#astronomy #environment #environmental-impact