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It only works for me if I think of Vanta Black! Must try this though - my wife is often asleep in a minute or so while I take tens of minutes. I wonder how muc

It only works for me if I think of Vanta Black! Must try this though - my wife is often asleep in a minute or so while I take tens of minutes. I wonder how much using mobile devices in bed at night has affected sleep patterns.

djaychela 8y ago
I've taken to not using a screen within about an hour of going to bed, and never using the phone in the bedroom (because of association), and my sleep is much better - I fall asleep quicker, and study asleep longer. I tested the opposite on myself previously (intentionally using the phone in bed right up to lights out), and took longer to get to sleep, and woke up around 4-5am feeling not very rested. Smartphones are the devil.
davedx 8y ago
Mobile devices- anything with a screen that emits blue wavelengths IIRC - are terrible for getting to sleep. I avoid mine except for turning my alarm on.
- _0ffh 8y ago
  Exactly right, which is why I adjust my monitor settings down if I stay late at the computer. Do do it in steps, and the adapted eye can go down even farther than "xrandr --output HDMI-0 --brightness 0.05 --gamma 2.0:1.0:0.5" and still see quite well... ;-) Also, for people who read from a tablet or phone in bed, use software that supports a night mode. Set background color to black and font color to dark amber. Then gradually shift down overall brightness. Personally, I use "Cool Reader", which is really good for that, as it lets you adjust brightness just by sliding up/down on the left screen border.
- maccard 8y ago
  > I avoid mine except for turning my alarm on. Two solutions to this - get a standalone alarm clock, or set up an alarm to repeat on weekdays so you don't have to do it every evening.
- dingaling 8y ago
  Yet for centuries people have taken siestas in the blueish noon Sunlight, 5500 to 9000 Kelvin. Why the sudden claimed sensitivity to blue light at night? Correlated to the ubiquity of indoors electrical lighting mimicking the colour of candlelight perhaps? Or perhaps Westerners aren't going to bed physically tired after a day of sedentary work?

djaychela 8y ago

I've taken to not using a screen within about an hour of going to bed, and never using the phone in the bedroom (because of association), and my sleep is much better - I fall asleep quicker, and study asleep longer. I tested the opposite on myself previously (intentionally using the phone in bed right up to lights out), and took longer to get to sleep, and woke up around 4-5am feeling not very rested. Smartphones are the devil.

davedx 8y ago

Mobile devices- anything with a screen that emits blue wavelengths IIRC - are terrible for getting to sleep. I avoid mine except for turning my alarm on.

_0ffh 8y ago
Exactly right, which is why I adjust my monitor settings down if I stay late at the computer. Do do it in steps, and the adapted eye can go down even farther than "xrandr --output HDMI-0 --brightness 0.05 --gamma 2.0:1.0:0.5" and still see quite well... ;-) Also, for people who read from a tablet or phone in bed, use software that supports a night mode. Set background color to black and font color to dark amber. Then gradually shift down overall brightness. Personally, I use "Cool Reader", which is really good for that, as it lets you adjust brightness just by sliding up/down on the left screen border.
maccard 8y ago
> I avoid mine except for turning my alarm on. Two solutions to this - get a standalone alarm clock, or set up an alarm to repeat on weekdays so you don't have to do it every evening.
dingaling 8y ago
Yet for centuries people have taken siestas in the blueish noon Sunlight, 5500 to 9000 Kelvin. Why the sudden claimed sensitivity to blue light at night? Correlated to the ubiquity of indoors electrical lighting mimicking the colour of candlelight perhaps? Or perhaps Westerners aren't going to bed physically tired after a day of sedentary work?