Dark and light blue background11/23/2023 ![]() 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. A mere eight lux-a level of brightness exceeded by most table lamps and about twice that of a night light-has an effect, notes Stephen Lockley, a Harvard sleep researcher. Even dim light can interfere with a person's circadian rhythm and melatonin secretion. 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.Įxposure to light suppresses the secretion of melatonin, a hormone that influences circadian rhythms. The researchers put 10 people on a schedule that gradually shifted the timing of their circadian rhythms. That's not proof that nighttime light exposure causes these conditions nor is it clear why it could be bad for us.Ī Harvard study shed a little bit of light on the possible connection to diabetes and possibly obesity. Some studies suggest a link between exposure to light at night, such as working the night shift, to diabetes, heart disease, and obesity. Charles Czeisler of Harvard Medical School showed, in 1981, that daylight keeps a person's internal clock aligned with the environment. The circadian rhythm of people who stay up late is slightly longer, while the rhythms of earlier birds fall short of 24 hours. Light and sleepĮveryone has slightly different circadian rhythms, but the average length is 24 and one-quarter hours. And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown. Blue wavelengths-which are beneficial during daylight hours because they boost attention, reaction times, and mood-seem to be the most disruptive at night. Not all colors of light have the same effect. Worse, research shows that it may contribute to the causation of cancer, diabetes, heart disease, and obesity. At night, light throws the body's biological clock-the circadian rhythm-out of whack. Now, in much of the world, evenings are illuminated, and we take our easy access to all those lumens pretty much for granted.īut we may be paying a price for basking in all that light. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative) darkness. Once you are done, you can play around with an array of 3D, screen resolution, and tiling options available, and choose one that befits you.What is blue light? The effect blue light has on your sleep and more.Īlthough it is environmentally friendly, blue light can affect your sleep and potentially cause disease. Right-click the image and select the option to set it as your background. Select a photograph from your collection. How do I make an image my desktop wallpaper? You can do this by following a simple process: 1. All you need to do is to know how to save images as wallpapers, and there you go! You will have a wallpaper that suits your needs and preferences. Can I design desktop wallpapers? Yes, you can! You do not need to be a graphic designer for you to do this. That said, desktop wallpapers cannot be ignored, they mean different things to different people. Adding a quote will act as a reminder of what inspires you in your day-to-day life. Interesting, huh? You can add an image that shows how you feel or one that means something to you. Sometimes, people display their feelings through the use of desktop wallpapers. They add glamor to your computer and make it look aesthetically appealing and highly presentable. However, this element comes with a sense of beauty. In fact, you can decide to use a dark colour, and life will move on as usual. What is the use of a desktop wallpaper? Well, adding a wallpaper to your desktop is not mandatory. What you need to know is that these images that you add will neither increase nor decrease the speed of your computer. A desktop wallpaper is highly customizable, and you can give yours a personal touch by adding your images (including your photos from a camera) or download beautiful pictures from the internet. The background of this screen can be a single colour, multiple colours, or some other graphical representations. What is a desktop wallpaper? When you boot your computer, there is an initial screen that comes up, in which your folders, documents, and software shortcuts are placed.
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