Apple recently released a free update to iOS 9.3, the operating system for iPhone and iPad. The most interesting addition this time is the ‘night shift’ function. After sunset, the screen gets a rosy glow that is less bothersome to the eyes  and should ensure a better night’s sleep. In the Dagblad van het Noorden on SaturdayApril 23 you will find an interview with Marijke Gordijn about the disadvantages of blue light in the evening ….
https://www.dvhn.nl/extra/Roze-schermen-in-bed-21299699.html