Study questions the effectiveness of our smartphones’ night mode July 15, 2020 – Posted in: Smartphone news


Study questions the effectiveness of our smartphones' night mode

A study by researchers at the University of Manchester tends to show that the night mode that we find on our smartphones is not as effective as we thought. By adding this functionality, manufacturers assume that blue light between 446 and 500 nanometers has negative effects on the circadian cycle. In theory, it would be better to display warm lights so as not to interfere with the biological clock. But the study in question explains that warm lights are also harmful to sleep and that there is no point in using them.

Reduce the brightness rather than change the color?

It makes sense: daylight is yellow, dusk is blue, as is sunrise and sunset. These are fairly reliable ways to tell your biological clock what time it is. “Said Dr. Brown, responsible for this study.

In the end, the most important element would be the level of screen brightness. Rather than changing the color, we should only focus on the brightness emitted. This means that the “dark mode” which is offered in addition to the night mode is a more relevant solution to reduce the impact on the rhythm of sleep. The principle of “dark mode” is to provide a black background. It is available on the iPhone under iOS 13, but also on certain applications or smartphones under Android.

Source: The Guardian