Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Rooms can be as bright as the outdoors

benkuhn.net

Post reply on HN
Print view View original

171–180 of 317 posts

Re: Rooms can be as bright as the outdoors

#171

Post by taneq »

SirHound wrote: post #124
taneq wrote: post #117

Earlier quoted context omitted.

> I fit the pattern of "Non-24 Sleep-Wake Disorder", with my sleep and waking times drifting progressively later at semi-regular intervals. This is a disorder now? I thought that's just how humans worked. It's how I work, anyway - if nothing else (like work, or children waking up at 5:30am) forces me to get up at a set time, I'll slowly cycle through until I'm going to bed at sun-up and waking up at 3pm.

No this isn’t typical. Are you particulary good at coping with jetlag?

Depends which way I'm flying. :) Flying westwards is fine, I can absorb the extra hours without much noticing them. Flying eastwards is awful.

Re: Rooms can be as bright as the outdoors

#172

Post by ars »

anewguy9000 wrote: post #114
seltzered_ wrote: post #111

Earlier quoted context omitted.

"I keep going back to halogen as the sweet-spot between black-body radiation and energy efficiency." Permies put out an article arguing for incandescent if your goal is light AND warmth: From https://richsoil.com/electric-heat.jsp - "This last one was the most important. A standard incandescent light bulb heats something to the point that it glows white hot. So I used this to heat myself and it doubled as a light sou…

yup. like my low flow toilet that i need to flush twice...

Not anymore, technology has improved a lot! Get this one (or variant on it): https://smile.amazon.com/gp/product/B001KAFKRM

I've owned it for 5 years and it's clogged only once (it happened in the first week of ownership) then never again.

And one time (in 5 years) I needed to flush it twice.

Re: Rooms can be as bright as the outdoors

#173

Post by ars »

wheels wrote: post #78
gligorot wrote: post #68

Earlier quoted context omitted.

I absolutely hate LEDs. I don't know why, but I just hate them. Especially the white ones. The yellower are similar to a mid summer day and I can cope with them, but there's always this feeling of something being off. I guess it's connected to us humans being used to non-sun light being (similar to) a fire - mainly consisting of yellow/orange tones. Also, I don't exactly remember from where I read this, but when a (t…

> I absolutely hate LEDs. I don't know why, but... I'm really interested in the why . Most people don't seem to care. My in-laws have CFLs in their living room that just feel horrible to me, but they're none the wiser. I'm very curious as to what it is in the light spectrum that seems to matter to some (small) class of people, myself, and it sounds like you, included. The word for "fire-like" light, used in my origin…

I like CFLs but hate most LEDs because they flicker! It's at 120hz, but I can see it and it drives me crazy.

Another thing I hate is LEDs with such a sharp point source them make speckle patterns like a laser.

But I did find some good LEDs and I'm using them now, them seem as good as the CFLs they replaced. Had to return a bunch of bad ones though.

Re: Rooms can be as bright as the outdoors

#174

Post by ars »

mrb wrote: post #157
yx827ha wrote: post #149

Earlier quoted context omitted.

It might be the flicker. Most LED lights I've found have pretty bad flicker: https://youtu.be/eWut5Qx6mkM?t=285 Phones are pretty bad too. Check out the Nexus 5x vs Pixel 3: https://drive.google.com/drive/folders/1f7-ChF4zFiisFdmEZVEz... I found that Phillips non dimmable bulbs are the cheap and don't flicker.

Same experience here. I film all the led bulbs I purchase in 240fps to see if they flicker at 60Hz. I discovered that Philips bulbs NEVER flicker. Occasionally I stumble upon other cheaper brands that don't flicker, but there is never any guarantee. I might buy 2 batches 6 months apart of bulbs from the same model from the same third party seller on Amazon, and they slightly changed the product (updated packaging and…

A ton of LEDs flicker at 120hz which makes me crazy. It's like a strobe effect that I only see when moving.

Re: Rooms can be as bright as the outdoors

#175

Post by upofadown »

asdf333 wrote: post #2

i have seen articles about excessive blue light from led bulbs being bad for your long term eyesight i wonder if this has similar problems

I use a bank of blue LEDs aimed up at a white ceiling for the winter so I spent some time looking into the question. I didn't find anything very definite or concerning.

Note that there is a whole snake oil thing going on with blue light these days. Some of what we see about this stuff might be coming out of that particular industry.

Re: Rooms can be as bright as the outdoors

#176

Post by garmaine »

bitexploder wrote: post #73
gligorot wrote: post #68

Earlier quoted context omitted.

I absolutely hate LEDs. I don't know why, but I just hate them. Especially the white ones. The yellower are similar to a mid summer day and I can cope with them, but there's always this feeling of something being off. I guess it's connected to us humans being used to non-sun light being (similar to) a fire - mainly consisting of yellow/orange tones. Also, I don't exactly remember from where I read this, but when a (t…

The flickering. It’s not nice.

LEDs do not flicker.

Re: Rooms can be as bright as the outdoors

#178

Post by doctorpangloss »

> 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 $13/mo for Netflix to watch shows with multi-million dollar budgets and dedicated colorists, and you start watching Orange is the New Black and you make it yellow, that's your prerogative. So you don't need my opinions, so don't downvote just because you like f.lux and hate opinions.

Why did you have to say anything about cancer at all?

What's your personal line for, "I'm not sure" versus "This is actionable evidence for change in behavior?"

There is no clinically controlled evidence showing that interventional blue light, the kind that would be emitted from an LED, causes significant change in sleep quality with measures like minutes spent sleeping or an insomnia scoring system. I found this by searching "blue light" and "sleep" in clinicaltrials.gov. There are 4 or 5 studies on the matter, all negative results. The best way to interpret this evidence is that blue light will not make you sleep less or experience insomnia more.

Indeed, if you consulted a doctor, you might learn that waking up too early is the most common sleep disturbance in adults. This interferes with their daily lives, by causing them to feel drowsy in the middle of the day. That's why blue light is typically investigated as an intervention: to get people to fall asleep and wake up later. It just doesn't turn out to work for that. Its absence is not causing people to fall asleep earlier either.

Re: Rooms can be as bright as the outdoors

#179

Post by hvidgaard »

herf wrote: post #151
kaibee wrote: post #140

Earlier quoted context omitted.

> cancer progresses much faster in summer than in winter This sounds fascinating. Do you have a source? Btw, I love f.lux and have been using it since probably like 2010, possibly earlier. Its basically the first thing I install on any computer.

I made a note about Blask's 2005 work below, which is the main work I was thinking about. We can say that constant light is bad for cancer. But as I'm refreshing my memory, winter can cut both ways. For some, it makes more darkness and more melatonin (which is thought to be protective of cancer). For others, winter results in not seeing enough light, and so melatonin amplitude goes down. And so this is associated wit…

My immediate thought is that is very closely related to sleep.

Re: Rooms can be as bright as the outdoors

#180

Post by benhurmarcel »

taneq wrote: post #117
wheels wrote: post #51

I usually eschew labels, preferring simply "sleep weirdo", but I fit the pattern of "Non-24 Sleep-Wake Disorder", with my sleep and waking times drifting progressively later at semi-regular intervals. The result is that I'm often awake through the night. (This week I'm going to bed around 9:00 a.m.) Even with that, I've noticed some pretty big productivity swings based on the season. Interestingly, this hit me very h…

> I fit the pattern of "Non-24 Sleep-Wake Disorder", with my sleep and waking times drifting progressively later at semi-regular intervals. This is a disorder now? I thought that's just how humans worked. It's how I work, anyway - if nothing else (like work, or children waking up at 5:30am) forces me to get up at a set time, I'll slowly cycle through until I'm going to bed at sun-up and waking up at 3pm.

I also thought it was normal.

Once for a couple of weeks I worked and slept as I felt like it. I ended up doing ~30h days. It was the best I’ve ever felt while being quite productive.

Unfortunately it’s not an option to do that long term.

Post reply on HN