LIGHT filters of coloured glass and gelatin are in common use for visual and photoelectric photometers. They are satisfactory, on the whole; but the glass filters are easily broken, and those of ...

You can change the color of your iPhone screen in several ways through the device's Accessibility settings. Here's how to do ...

Does your head hurt? Are you having trouble sleeping? Believe it or not, your smartphone may be to blame. Scientists believe the blue light electronic devices emit may be contributing to these issues.

All the screens we look at every day emit a large quantity of blue light. That's fine for daytime use, but it can disrupt your sleep at night. That's because blue light stimulates your brain and fools ...

Blue light has had a negative impact on our health since the pandemic, and it’s all thanks to all-time high digital screen time levels. Blue light is known to affect sleep habits and overall work ...

Using your phone before bed gets a bad rap — and rightfully so. It’s tough to drift off when you’re over-stimulated by social media, and on top of that, your screen emits blue light, which is ...