291–300 of 316 posts
The ebook reader part is kind of disturbing, I have a warm mode on mine that I always use, and the brightness set as low as it'll go (I find it too bright, but they seem to use a linear scale so there's not much range of adjustment). I have a red LED striplight above my bed for reading paper books so I will try using that for the ebook reader and see if I notice a difference. My main issue is that interesting ebooks…
I recommend you to re-read the e-reader part but paying special attention to the scales of the graphs. They are all different. Kobo Aura peaks at 4000 counts in the blue spectrum, while the incandescent also emits about 4000 counts. The Kobo Clara only emits 2500 counts when full warm.
How is this different from the long standing understanding we already had that blue light inhibits melatonin?
This isn't some groundbreaking new development. Blue light therapy has been around for over a decade to help people correct their circadian rhythms.
It's why the Kindle claims that it shines a warm light across the screen rather than directly at you. It's why mobile phones have begun to incorporate a night mode that can warm the backlight on the screen from a blue white light to warmer oranges.
I don't mean to sound like a grump. I was taught this back in highschool in my 2010 psychology class. How is this different from the long standing understanding we already had that blue light inhibits melatonin? This isn't some groundbreaking new development. Blue light therapy has been around for over a decade to help people correct their circadian rhythms. It's why the Kindle claims that it shines a warm light acro…
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> is unscientific, lacking in perspective, and offensive. I agree it is unscientific speculation. Science doesn’t have any answers. As one example, there are no conclusive scientific answers on why global male testosterone is declining, or why American girls are experiencing early puberty. Any plausible explanation has compelling reasons to dismiss it, and we can’t know scientifically if they are correct. Yet we can…
> Yet we can see both clearly in the data. If you want to escape these changes, you can only get answers outside of scientific knowledge. Those would be not answers , then.
Science is great and gives lots of really good answers, but there are lots and lots of other ways to get answer.
Sounds crazy, but when I close my eyes most of the light goes away and I can easily sleep.
The council replaced the warm halogen bulb streetlights in our area with extremely bright LEDs that have no shielding towards houses. I slept in a ground floor bedroom with a bay window directly beneath such a light for a year. Despite installing blackout blinds as best I could, the ambient light in my room was about the same level as mid-dawn the entire time. My mental health suffered intensely almost to the point o…
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Do you know does this actually lower the backlight or is it changing gamma or something like that. I'll try it anyways thanks
iphones are all OLED now, so there is no distinction. On an old LCD display there are some filters that do a linear/nonlinear mapping from 0->255 brightness to 0->64 for example, leaving the actual backlight at the same brightness. The downside is that colour banding and quantization start to get really bad - and 'black' starts to look very non-black.
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There are a number of factors involved in LED lighting quality, and annoyingly not all are tested for in reviews or shown on specs. Think of an LED as a capacitor designed to leak electricity that emits light whenever it leaks in one particular direction. It's a bit handwavy but it works here. Depending on the design it might require more or less charge or voltage before the electrons jump over the diode (the light-e…
Regarding flickering of lights supposedly Dogs and perhaps other animals are quite sensitive to them.