IPhone
In early 2016, Apple introduced the new Night Shift feature, or, as many other smartphone manufacturers call a similar option, “Night Mode”. It turned out that shifting the color palette of the screen to the “warmer” side has a negative effect.
A new study by a team of scientists from the University of Manchester, published in the journal Current Biology, raises the question of whether the "night mode" harms circadian rhythms? These are fluctuations in the internal processes of each animal on Earth, due to changes in ambient light. Even before the living things had eyes, they were already responding to the change of day and night. The subtlety is that in the daytime the light is not only brighter, but also warmer - this is how the incident rays of the sun are “filtered” by the atmosphere. And at night, the light reflected from the moon and the barely noticeable emission of stars already have a bluish tint.
Researchers tested on mice how they react to different lighting conditions during the day, not only by changing the brightness (which has already been studied more than once), but also by its color temperature. As expected, most of all the regimen was lost in animals that spent a lot of time under bright lamps and if the light intensity did not decrease in due time. However, another effect was discovered - it turned out that bluish light has a much lesser effect on their circadian rhythms than a warm, orange-yellow hue.
In other words, warm light of high and low brightness prevented the organisms of mice from understanding when they “need” to fall asleep. Whereas the cold, blue light had a much smaller effect. This is one of the first such studies, and mice are very different from humans, so far-reaching conclusions are too early to draw. However, this is a good reason not to blindly trust marketing statements. It is quite possible, on the contrary, closer to night, you need to turn off the night mode, as well as greatly reduce the brightness of the screen if you have to look at the smartphone in the dark or in low light.
A new study by a team of scientists from the University of Manchester, published in the journal Current Biology, raises the question of whether the "night mode" harms circadian rhythms? These are fluctuations in the internal processes of each animal on Earth, due to changes in ambient light. Even before the living things had eyes, they were already responding to the change of day and night. The subtlety is that in the daytime the light is not only brighter, but also warmer - this is how the incident rays of the sun are “filtered” by the atmosphere. And at night, the light reflected from the moon and the barely noticeable emission of stars already have a bluish tint.
Researchers tested on mice how they react to different lighting conditions during the day, not only by changing the brightness (which has already been studied more than once), but also by its color temperature. As expected, most of all the regimen was lost in animals that spent a lot of time under bright lamps and if the light intensity did not decrease in due time. However, another effect was discovered - it turned out that bluish light has a much lesser effect on their circadian rhythms than a warm, orange-yellow hue.
In other words, warm light of high and low brightness prevented the organisms of mice from understanding when they “need” to fall asleep. Whereas the cold, blue light had a much smaller effect. This is one of the first such studies, and mice are very different from humans, so far-reaching conclusions are too early to draw. However, this is a good reason not to blindly trust marketing statements. It is quite possible, on the contrary, closer to night, you need to turn off the night mode, as well as greatly reduce the brightness of the screen if you have to look at the smartphone in the dark or in low light.
