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Flipboard Science DeskResearchers from the University of Surrey in the UK ran an experiment involving 36 volunteers aged 60 or over, testing their response to two-hour-long sessions of blue and regular white light twice a day over several weeks. They have discovered that a morning dose of blue light might help older people sleep better in the evening, giving them a boost for their daily activities the following day. <a href="https://flipboard.com/@ScienceAlert" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@ScienceAlert</a> reports: <a href="https://www.sciencealert.com/a-morning-dose-of-blue-light-can-help-us-sleep-better-in-old-age" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.sciencealert.com/a-morning-dose-of-blue-light-can-help-us-sleep-better-in-old-age</a><a href="https://flipboard.social/tags/Sleep" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sleep</a> <a href="https://flipboard.social/tags/Health" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Health</a> <a href="https://flipboard.social/tags/HealthyAging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HealthyAging</a> <a href="https://flipboard.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a> <a href="https://flipboard.social/tags/Rest" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rest</a>

The Smartphone PhotographerBlue Light Chimney. <a href="https://pixelfed.social/discover/tags/nightphotography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#nightphotography</a> <a href="https://pixelfed.social/discover/tags/citylights?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#citylights</a> <a href="https://pixelfed.social/discover/tags/urbanlandscape?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#urbanlandscape</a> <a href="https://pixelfed.social/discover/tags/bluelight?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#bluelight</a> <a href="https://pixelfed.social/discover/tags/tower?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#tower</a> <a href="https://pixelfed.social/discover/tags/architecture?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#architecture</a> <a href="https://pixelfed.social/discover/tags/nightsky?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#nightsky</a> <a href="https://pixelfed.social/discover/tags/cityscape?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#cityscape</a> <a href="https://pixelfed.social/discover/tags/lightandshadow?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#lightandshadow</a> <a href="https://pixelfed.social/discover/tags/moodygrams?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#moodygrams</a> <a href="https://pixelfed.social/discover/tags/chimney?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#chimney</a> <a href="https://pixelfed.social/discover/tags/industry?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#industry</a> <a href="https://pixelfed.social/discover/tags/smartphonephotography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#smartphonephotography</a> <a href="https://pixelfed.social/discover/tags/photography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#photography</a>

MissyMe<a href="https://pixelfed.social/discover/tags/abstract?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#abstract</a> <a href="https://pixelfed.social/discover/tags/blue?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#blue</a> <a href="https://pixelfed.social/discover/tags/bluelight?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#bluelight</a> <a href="https://pixelfed.social/discover/tags/evening?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#evening</a> <a href="https://pixelfed.social/discover/tags/darkbeauty?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#darkbeauty</a> <a href="https://pixelfed.social/discover/tags/missyme?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#missyme</a>

Ameel KhanTurns out the dimming of blue light on your devices at night makes almost no difference to your sleep.You need blue light of 1-2k lux to affect your sleep, but our device screens emit only 80-100 lux.This is from a meta-study of 73 independent studies with a total of 113,370 participants of all ages.It's good to have the record set straight! How much does your phone’s blue light really delay your sleep? Relax, it’s just 2.7 minutes | <a href="https://theconversation.com/how-much-does-your-phones-blue-light-really-delay-your-sleep-relax-its-just-2-7-minutes-236066" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://theconversation.com/how-much-does-your-phones-blue-light-really-delay-your-sleep-relax-its-just-2-7-minutes-236066</a><a href="https://mastodon.social/tags/myth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#myth</a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#technology</a> <a href="https://mastodon.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a>

DoomsdaysCWWhy <a href="https://kolektiva.social/tags/LightPollution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LightPollution</a> is a solvable <a href="https://kolektiva.social/tags/environmental" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#environmental</a> crisisExcessive <a href="https://kolektiva.social/tags/OutdoorLighting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OutdoorLighting</a> is deadly to <a href="https://kolektiva.social/tags/animals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#animals</a> and takes a toll on <a href="https://kolektiva.social/tags/HumanHealth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HumanHealth</a> and wellbeing, too. But when it comes to large-scale environmental problems, this one may be a relatively easy fix.By Alissa Greenberg Friday, April 1, 2022 "In recent decades, lightbulbs made with <a href="https://kolektiva.social/tags/LEDs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LEDs</a> arrived, a revolution in energy efficiency with seemingly little downside. After all, an <a href="https://kolektiva.social/tags/LED" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LED</a> bulb converts some 90% of the electricity it uses into light, whereas a conventional incandescent bulb only converts about 10%. And LED bulbs are touted as lasting up to 25 times longer."But the physics of LEDs make them fundamentally different from incandescents. While those traditional bulbs put out warm white light made of all colors mixed together, LEDs filter blue-rich light through a specialized phosphor material, producing light that appears white to the human eye but is still more blue-intense than incandescents’ light."But <a href="https://kolektiva.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a> is also the most disruptive to our <a href="https://kolektiva.social/tags/nighttime" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nighttime</a> environment because it mimics daylight, disrupting the hormone production and sleep cycles of both animals and humans. "<a href="https://kolektiva.social/tags/Melatonin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Melatonin</a>, one of those hormones, helps the immune system destroy renegade cells dividing out of control. That can lead to other health issues, including heightened rates of <a href="https://kolektiva.social/tags/cancer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cancer</a>. And, 'we’re not the only ones who produce melatonin,' says Mario Motta, a cardiologist and trustee of the American Medical Association. Even amoebae produce melatonin'—meaning even amoebae might be vulnerable to light at night. "The impacts of light pollution are evident everywhere from human health to astronomy research, but they come into particular focus in the recent phenomenon of global species <a href="https://kolektiva.social/tags/dieoffs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#dieoffs</a>. Between 100 million and a billion birds die every year due to light pollution, according to Massachusetts IDA chapter president James Lowenthal. New York City recently dealt with a huge die-off, 'with flocks of <a href="https://kolektiva.social/tags/MigratoryBirds" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MigratoryBirds</a> slamming into buildings,' says Sarah Bois, an ecologist at the island’s Linda Loring Nature Foundation and a member of Nantucket Lights. 'They’re attracted to light.' A 2015 study at New York’s 9/11 'Tribute in Light'' installation showed an increase from 500 birds within half a kilometer of the light beams before they were turned on to 15,700 just minutes after."The issue is a double whammy for birds because they rely on <a href="https://kolektiva.social/tags/insects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#insects</a> for food—and those populations are plummeting, with light pollution contributing significantly to the so-called "<a href="https://kolektiva.social/tags/InsectApocalypse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#InsectApocalypse</a>.” By some estimates, one third of insects attracted to light sources at night die before morning, either due to exhaustion or because they get eaten. And according to a study in Germany, the number of insects in that country alone that die after being attracted to lights can number 100 billion or more in a single summer. "Some starve to death searching for food that should appear bluer at twilight but is lit up amber under streetlights, says insect conservationist Avalon Owens, a doctoral candidate at Tufts University. Some are thrown off by light just the way we are, because of their <a href="https://kolektiva.social/tags/CircadianRhythms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CircadianRhythms</a>. <a href="https://kolektiva.social/tags/Pollinators" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pollinators</a> whose schedules are altered by artificial light miss the <a href="https://kolektiva.social/tags/flowers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#flowers</a> they’re evolutionarily paired with, if the flowers naturally close and open with the warmth of the sun. And insects that rely on circadian rhythms for their yearly development don’t hibernate in time for winter and freeze to death."On <a href="https://kolektiva.social/tags/Nantucket" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Nantucket</a>, these phenomena are of particular concern because the island is home to a remarkably healthy population of northern long-eared <a href="https://kolektiva.social/tags/bats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bats</a>, which are endangered. Like many birds, the bats rely on insects for food and are easily dazzled by light, putting them in increasing jeopardy. Jack Dubinsky, director of the Maria Mitchell Aquarium on Nantucket, says he’s concerned that adding increasingly lit-up nights to the challenges of <a href="https://kolektiva.social/tags/ClimateChange" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ClimateChange</a>, water quality, and <a href="https://kolektiva.social/tags/ecosystem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ecosystem</a> collapse could put huge pressure on some already struggling species. 'The more curveballs we throw, the less likely they’ll be able to find their way,' he says.Read more: <a href="https://www.pbs.org/wgbh/nova/article/light-pollution-led-nantucket-solutions/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.pbs.org/wgbh/nova/article/light-pollution-led-nantucket-solutions/</a><a href="https://kolektiva.social/tags/DarkSkies" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DarkSkies</a> <a href="https://kolektiva.social/tags/Extinction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Extinction</a> <a href="https://kolektiva.social/tags/StreetLights" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#StreetLights</a>

Yvonne PerkinsResearch shows that glasses that have a filter for blue light to protect you from light emitted from computer screens do not help your eyes.An optometrist encouraged me to pay more for glasses that provide protection from blue light about 5 years ago. When I got them I complained that they made things look yellow. The optometrist said I would get used to them and would not notice.I got used to them. I ended up telling a graphic designer who I was working with that her designs had too much brown in them. It was the glasses. I apologised and spent a lot of money replacing the lenses. <a href="https://aus.social/tags/glasses" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glasses</a> <a href="https://aus.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a> <a href="https://www.sbs.com.au/news/article/do-you-wear-blue-light-glasses-this-is-how-effective-they-really-are/zmcat8ro5" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.sbs.com.au/news/article/do-you-wear-blue-light-glasses-this-is-how-effective-they-really-are/zmcat8ro5</a>

Carsten RaddatzTouch the blue<a href="https://nerdica.net/display/a85d7459-1764-19c8-d607-212512921292" rel="nofollow noopener noreferrer" target="_blank">https://nerdica.net/display/a85d7459-1764-19c8-d607-212512921292</a>

DoomsdaysCWYou’re Not Imagining It, Blinding Headlights Are a Real ProblemAdaptive driving beam headlights are now legal and could help, but it will probably take a few years.By Collin Woodar"If you ever drive at night, there’s a good chance you’ve noticed an increasing problem with blinding headlights. In some cases, people are simply driving around with their high beams on, but that doesn’t fully explain the problem. Anyone who’s flashed their lights at an oncoming driver to let them know their high beams are on, only to get hit with their actual high beams can tell you that. One thing is for sure, though — it’s not a good thing."The first is probably the most commonly understood, and that’s the fact that Americans keep buying taller and taller vehicles. Add six inches of ride height, and the lights get six inches higher. The report cites a JD Power study that says about 53 percent of vehicles sold here in 2010 were trucks or <a href="https://kolektiva.social/tags/SUVs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SUVs</a>, but by 2021, that number had risen to almost 79 percent.The final factor is the color of the lights themselves. A halogen bulb’s yellow-tinged color is warmer than the bluer, white light that <a href="https://kolektiva.social/tags/LEDs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LEDs</a> emit and therefore gentler on the eyes. So while a halogen and an LED headlight could be equally bright, the human eye will see the LED one as brighter and harsher. 'The eye is sensitive to those blue wavelengths, but the light meter is not,' Mark Rea told Insider, a professor at the Mount Sinai Icahn School of Medicine." <a href="https://kolektiva.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a> <a href="https://kolektiva.social/tags/LightPollution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LightPollution</a>Read more: <a href="https://jalopnik.com/you-re-not-imagining-it-blinding-headlights-are-a-real-1850112863?utm_source=pocket-newtab" rel="nofollow noopener noreferrer" target="_blank">https://jalopnik.com/you-re-not-imagining-it-blinding-headlights-are-a-real-1850112863?utm_source=pocket-newtab</a>

Mark PriorThis is not going to be a trend but after picking the photo for today's <a href="https://ohai.social/tags/PhotoOfTheDay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PhotoOfTheDay</a> I realised it's another opera house. This one is in Beijing and was also designed by a European, in this case Paul Andreu. If you walk west from Tiananmen Square you find the very modern looking National Centre for the Performing Arts floating in a pool. This time the blue light is provided by the setting sun.<a href="https://ohai.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photography</a> <a href="https://ohai.social/tags/PhotoFriday" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PhotoFriday</a> <a href="https://ohai.social/tags/OperaHouse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OperaHouse</a> <a href="https://ohai.social/tags/Beijing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Beijing</a> <a href="https://ohai.social/tags/China" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#China</a> <a href="https://ohai.social/tags/reflection" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reflection</a> <a href="https://ohai.social/tags/BlueLight" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueLight</a> <a href="https://ohai.social/tags/travel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#travel</a> <a href="https://ohai.social/tags/architecture" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#architecture</a>

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