Blue light has a dark side. Exposure to blue light at night, emitted by electronics and energy- efficient lightbulbs, harmful to your health. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative) darkness. Now, in much of the world, evenings are illuminated, and we take our easy access to all those lumens pretty much for granted. But we may be paying a price for basking in all that light. At night, light throws the body's biological clock. Worse, research shows that it may contribute to the causation of cancer, diabetes, heart disease, and obesity. But not all colors of light have the same effect. And the proliferation of electronics with screens, as well as energy- efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown. Daily rhythms influenced by light. Everyone has slightly different circadian rhythms, but the average length is 2. Viewers across California and parts of the West Coast reported seeing a strange, large flash of light across the Pacific Ocean Saturday night as the U.S. Navy was conducting a missile test. Many viewers called NBC San Diego. Bright Outdoor Solar Lights Motion Sensor Detector - No Battery Required - Weatherproof Wireless Exterior Security Outdoor Lighting For Patio Deck Yard Garden Home Driveway Stairs Outside Wall, Day / Night Auto On / Off - (No. The Bright Light is de collectie van kwalitatieve design verlichting die handgemaakt is in Kuurne. The circadian rhythm of people who stay up late is slightly longer, while the rhythms of earlier birds fall short of 2. Charles Czeisler of Harvard Medical School showed, in 1. The health risks of nighttime light. Study after study has linked working the night shift and exposure to light at night to several types of cancer (breast, prostate), diabetes, heart disease, and obesity. It's not exactly clear why nighttime light exposure seems to be so bad for us. But we do know that exposure to light suppresses the secretion of melatonin, a hormone that influences circadian rhythms, and there's some experimental evidence (it's very preliminary) that lower melatonin levels might explain the association with cancer. A Harvard study shed a little bit of light on the possible connection to diabetes and possibly obesity. The researchers put 1. Their blood sugar levels increased, throwing them into a prediabetic state, and levels of leptin, a hormone that leaves people feeling full after a meal, went down. Even dim light can interfere with a person's circadian rhythm and melatonin secretion. Light at night is part of the reason so many people don't get enough sleep, says Lockley, and researchers have linked short sleep to increased risk for depression, as well as diabetes and cardiovascular problems. The power of the blues. While light of any kind can suppress the secretion of melatonin, blue light at night does so more powerfully. Harvard researchers and their colleagues conducted an experiment comparing the effects of 6. The blue light suppressed melatonin for about twice as long as the green light and shifted circadian rhythms by twice as much (3 hours vs. In another study of blue light, researchers at the University of Toronto compared the melatonin levels of people exposed to bright indoor light who were wearing blue- light. Video 50:29 In this introductory tutorial, David uses a simple north-lit orb to show how he can start with flat light and shadow and transform it into a dimens. Management: [email protected] Booking: US - [email protected] Rest of World - [email protected] Bright Light Bright Light is the moniker of Welsh born, London based Rod Thomas who. The Bright Light Gil Bergerac. Buy album $9.99 + + 1. Panic in the Shuttle Gil Bergerac. The fact that the levels of the hormone were about the same in the two groups strengthens the hypothesis that blue light is a potent suppressor of melatonin. It also suggests that shift workers and night owls could perhaps protect themselves if they wore eyewear that blocks blue light. Inexpensive sunglasses with orange- tinted lenses block blue light, but they also block other colors, so they're not suitable for use indoors at night. Glasses that block out only blue light can cost up to $8. Less- blue light. If blue light does have adverse health effects, then environmental concerns, and the quest for energy- efficient lighting, could be at odds with personal health. Those curlicue compact fluorescent lightbulbs and LED lights are much more energy- efficient than the old- fashioned incandescent lightbulbs we grew up with. But they also tend to produce more blue light. The physics of fluorescent lights can't be changed, but coatings inside the bulbs can be so they produce a warmer, less blue light. LED lights are more efficient than fluorescent lights, but they also produce a fair amount of light in the blue spectrum. The Bright Light Social Hour 'continually exhilirating.' NPR Psychedelic / Future / Cosmic Soul. Rare sweep of six awards at the. Richard Hansler, a light researcher at John Carroll University in Cleveland, notes that ordinary incandescent lights also produce some blue light, although less than most fluorescent lightbulbs. What you can do. Use dim red lights for night lights. Red light has the least power to shift circadian rhythm and suppress melatonin. Avoid looking at bright screens beginning two to three hours before bed. If you work a night shift or use a lot of electronic devices at night, consider wearing blue- blocking glasses or installing an app that filters the blue/green wavelength at night. Expose yourself to lots of bright light during the day, which will boost your ability to sleep at night, as well as your mood and alertness during daylight. Custom, affordable, and easy to use digital signage products and services.
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