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Rooms can be as bright as the outdoors

benkuhn.net

241–250 of 317 posts

Re: Rooms can be as bright as the outdoors

#241
> Instead of having a strong urge to stop working whenever it got dark out

Lots of us have the opposite urge! My theory is that darkness induces a combination of mild-depression and subliminal sort-of-pleasant fear that HELPS us ADD-iacs focus waaaay better especially on tasks like coding and debugging.

PLEASE never use OPs conclusions when designing public spaces, this would kill the productivity of people like me!

Re: Rooms can be as bright as the outdoors

#242
post #134

(Michael from f.lux): this kind of thing is necessary for most buildings, because otherwise people don't get a "day" signal when they spend time indoors. Most of us spend >90% of our time inside. However, we shouldn't mess with light levels like these (or even somewhat lower ones) without some limits, and the main one is some automatic timing to turn things down after it gets too late. Otherwise you will find yoursel…

Is there any solid peer-reviewed, published papers on this stuff? While it sounds intuitively correct and attractive, I've struggled to find anything rigorous that shows light colour and intensity in the evening has an effect of sleep quality - its all anecdotal.

Re: Rooms can be as bright as the outdoors

#243
> stop working whenever it got dark out

Also, this might be a good urge - just stop working and stop trying to use light to squeeze every ounce of productivity from yourself until you burn out!

Re: Rooms can be as bright as the outdoors

#244
post #141

Earlier quoted context omitted.

> cancer progresses much faster in summer than in winter Can you point me to a reference for this? This pattern is surprising and I would like to learn more about this.

I think the seasonality data may be mixed, with more diagnoses in the fall and spring in human subjects studies. This particular claim was a hypothesis from Richard Stevens, with some experimental work that shows rapid cancer growth under constant light (in human tumors implanted in mice) by Blask (2002, 2005): http://www.nel.edu/userfiles/articlesnew/NEL230802A03.pdf The main mechanism in the Blask work is thought t…

The rat study you cite here is certainly far from sufficient evidence to make such bold claims or implicated that indoor lighting can promote cancer development in humans! I think you should edit your statement in the top comment further to make it clear that you are not referring to any solid human data here at all.

Re: Rooms can be as bright as the outdoors

#245

It is possible to recycle old LCD monitors into articficial windows that have a very real feel to them. The diffraction lenses for the backlight direct the light in a way that makes it appear sun like. Of course this is only about the direction and not about the spectrum, but it might be possible to find LED strips with a high CRI. Any feedback would be appreciated. DIY directions on YT: https://www.youtube.com/watch…

Great video. The light produced is so soft and convincing.

Do you know of any consumer version for sale? It feels like there should be a product offering with how little changes need to be made to convert a tv or laptop screen

Re: Rooms can be as bright as the outdoors

#246
post #134

(Michael from f.lux): this kind of thing is necessary for most buildings, because otherwise people don't get a "day" signal when they spend time indoors. Most of us spend >90% of our time inside. However, we shouldn't mess with light levels like these (or even somewhat lower ones) without some limits, and the main one is some automatic timing to turn things down after it gets too late. Otherwise you will find yoursel…

Is there any solid peer-reviewed, published papers on this stuff? While it sounds intuitively correct and attractive, I've struggled to find anything rigorous that shows light colour and intensity in the evening has an effect of sleep quality - its all anecdotal.

Second this, and I wonder how people who live near the equator respond to seasons and light vs. people closer to the Arctic circle.

Re: Rooms can be as bright as the outdoors

#247
post #134

(Michael from f.lux): this kind of thing is necessary for most buildings, because otherwise people don't get a "day" signal when they spend time indoors. Most of us spend >90% of our time inside. However, we shouldn't mess with light levels like these (or even somewhat lower ones) without some limits, and the main one is some automatic timing to turn things down after it gets too late. Otherwise you will find yoursel…

Hey Michael, thanks for commenting! (And thanks for making f.lux which I've found incredibly useful for years!)

I strongly agree that it's important to change light levels throughout the day; it's very obvious that bulbs this bright suppress my sleepiness. I should probably add this to the post's FAQ so that people don't do anything irresponsible.

I do think that some people might get a mistaken impression of how strong the evidence is when you claim that "cancer progresses much faster in constant light" without citing or caveating that this is based on one study, in rats, where the treatment shone a light on them for a full 24 hours.

Re: Rooms can be as bright as the outdoors

#248
post #160

Earlier quoted context omitted.

Yes, we were looking at this quite a while ago. Lighting is a really hard business (especially residential) so we did not make the leap, and mainly have tried so far to work with people who are in that business. We thought back then that some form of "smart lighting" would be universal. This mostly hasn't happened, so the truth is that the opportunity is different than we had guessed. Today most "smart" replacement l…

Out of curiosity, what makes lighting such a hard business? I have given the issue some thought as well. f.lux integration with Hue is great, but unfortunately not a solution for me, as I'd have to keep my windows pc running all day.

Fixture design is fashion and existing products are not expensive.

Re: Rooms can be as bright as the outdoors

#249
post #160
post #155

Earlier quoted context omitted.

Have you considered manufacturing f.lux for home lighting, such as a wall-mounted controller for Hue or Ikea bulbs that changes color spectrum depending on time of day? Or possibly bulbs with f.lux build in, so no external controller is required?

Yes, we were looking at this quite a while ago. Lighting is a really hard business (especially residential) so we did not make the leap, and mainly have tried so far to work with people who are in that business. We thought back then that some form of "smart lighting" would be universal. This mostly hasn't happened, so the truth is that the opportunity is different than we had guessed. Today most "smart" replacement l…

Thanks for the info! Just learned about bias lighting from your blog post.

Any chance we will see a non-root flux for Android?

Re: Rooms can be as bright as the outdoors

#250

> For instance, cancer progresses much faster in summer than in winter [edit: cancer progresses much faster in constant light: winter vs. summer is complicated] I don't know you, you make a very successful app that people really swear by. I have no qualms about people using f.lux, if you want to take your $4,600 laptop and $1,400 phone, on which people spent decades perfecting color reproduction, and you're paying $1…

I'm just commenting to save what might be the saltiest comment I've ever seen on HN. I bet you're very fun at parties.

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