LED a shit

warm light led's thx

the fuck are you doing staring at lightbulbs all day you spastic?

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Master race space heater and light source combo

luckily I don't use lights

>>58352914
>similar conditions
Which you'd never have in real life anyway.
Good job reading that shit faggot

>But, comparisons were
>made in this study in a very controlled manner which allow
>compare the effects of different light sources. It shows
>that at the same illuminance and under similar conditions,
>white, blue and green LEDs provoke retinal damage,
>while CFLs do not. They also highlight once more, the tox-
>icity of blue light and particularly of blue-LEDs.

what about non-LED blue light sources

I wanna know

>>58352935
I'm still using these and as long as I can get then anywhere, I will continue to do so.

>>58353478
post your stash of bulbs my friend!
mine is in the attic in a big box. Still living with my parents they dont want to use this but i really really like them.

>>58353538
I only got about 10, can still order new ones on Amazon..

>>58353147
Did you read it?
LED caused damage even at 500 lux, which is normal indoor illuminance.

>>58353618
With dilluted pupils (That's abnormal) or at exposure of 24h (Do you sleep with open eyes and the lights on? This is also abnormal)

>>58353147
Yeah if you stare directly into a bright one for 12 hours it may damage your eyes.
The CFL bulbs just emit slightly lower levels of harmful UV light. Your monitors, tablets and phones are all emitting harmful light.
The sun emits a full spectrum of harmful shit all day.
And everything causes cancer.

>>58353642
And be staring directly into the bulb so there is no scattering or absorption of rays.

>>58353642
>it won't affect you in any way if you're exposed to it for 23 hours and 59 minutes

>>58353478
kill yourself grandpa

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>>58353666
Can you lend me your headphones to hang myself, heard you can't use them anymore with your iFag 7 anyway because you're so brave or something.

>>58353642
The albino rats were fucked up even in completely normal conditions (normal on/off cycles without dilated pupils). After only one month.

>>58353721
Yes, but only the albino rats.
And albino is pretty far from the norm.

It basically says that the normal rats under normal conditions were perfectly fine.

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>>58353666
>le LED master race here xD
Enjoy your shitty cancerous eye strain inducing PWM

>>58353743
>It basically says that the normal rats under normal conditions were perfectly fine.
That's not what is says you illiterate retard.

>>58352935
Can you buy these anywhere in europe?

>>58353781
IIRC only the 75 W and under.

>>58353766
>eye strain inducing PWM

stop ordering your bulbs from aliexpress

>>58353791
Oh, nice. I feared the EU was enlightened enough to ban all incandescent bulbs. I'll have to buy some 60W's for my bedrooms.

>>58353766
looks like you just got shit leds
the ones i got are 100% flicker free from china

>>58353781
Italianfag here, no they're illegal, closest thing you can find is halogens, just a bit more efficient, no electronics, same kind of light and CRI100, they're fine

>>58353781
You can get 100w bulbs online.

>>58353781
In germany there are some cheap dollar store type shops and they still sell off brand 60 75 and 100w bulbs for like 69 cents a piece.

>>58352935
Heat rises
Lightbulbs are installed in light fixtures
Which are attached to ceilings...

>>58353888
>Heat rises
what a waste of trips my friend
its called "the fire rises"

If not LEDs what then?

>>58352914
I use fluorescent tubes with traditional ballasts. Best combo

>>58352914
>CFL

enjoy your migraine, it it works as a BPL transmitting data to the government

>>58353915
What would you recommend?

>>58353781
Most pound shops sell them.
Bypass the ban by saying "not for domestic use"
Enjoying a 200w here.

>>58353895
Masketta man!

>>58353781
You can get them for 0.33€ in slavlands.

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>>58352914
shit is this serious?

can I use 6500K LED in my growroom if I spend there only couple of minutes everyday?

Should I use sunglasses?

>>58353904
Enjoy your 100 Hz flicker

>>58353869
Do you know if importing them from saner countries is illegal?

>>58352914
>http://twin.sci-hub.cc/ac1a63745360991b7b9a42390ab3faa8/krigel2016.pdf
>neuro"science"
Stopped reading there.

LED monitors cause blindness

Why in the hell did they test blue and green LEDs?
Who uses blue and green LEDs for illumination?

Why didn't they test some different white LED instead?

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>>58353956
That's just from all the gay porn you fap to. Next is hair on your palms.

>>58353992
Because their goal is to get ad revenue from a poorly done experiment.

>>58353923
>having a light bulb that produces more heat than an AMD RX 480
at least it does not inject harmonics into the grid.

>>58353712
i dont use apple toys

>>58353815
this

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>must choose between an expensive bulb that fucks up your eyes or an overpriced bulb that contains deadly chemicals and gives you psychological stress because muh global warming hoax

thanks obama

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>>58352924
>suddenly you realize that a screen is nothing but a huge light bulb
>suddenly you feel your retina getting a little loose

>buy new house
>install all ikea warm led bulbs
Comfy af thb senpai. Can literally light up my whole house with less than 100W.

>>58353936
study says that exposure to blue light LED (Cold light) in normal domestic environment might be dangerous and cause AMD (lol), is that normal domestic environment in your fucking eyes?

>>58354476
There are a lot bigger harmonics in the current grid than those caused by lighting elements.

>>58353815
>implying cheap Chinese led bulbs have a PWM driver
They just have shitty conversion to DC and you'll get a 50/60Hz flicker

>>58352914
>white, blue and green LEDs

Gee, and i thought green lights everywhere was the way to go.

>>58354625
Almost all IKEA bulbs flicker.

There's a guy on YT who reviews them.

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>>58352914
https://www.aliexpress.com/item/These_bulbs_dont_flicker_NIGGER/32587696934.html
these are truely god tier.
just DONT get the e14 ones these DO suck!

>>58355340
What's the light output?

>>58353815
What the hell does PWM even stand for?
Please Wake Me?
Penis Wrinkle Maker?
Painting With Manginas?
Pinsane Wown Mosse?
Pone Wemple Milots?

>>58355404
You must be 18 or over to post on this website.

>>58355404
pulse width modulation you retard.

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>>58355340
>"These bulbs don't flicker"
>see the reviews
>see this and many others like this

>>58355404
It stands for Pretty Wonderful Modulation.
There's absolutely nothing wrong with it. It's simple and works.
The problem comes when you, like Lenovo, use low frequencies like 100-200Hz to drive something with very fast switching times like LEDs.

>>58355518
>low frequencies like 100-200Hz
More like 50-60 Hz

>>58355393
the 8w is kind of 60w to 75 w ish

>>58355493
you dumb those are the e14 ones those suck shit absolute garbage!

>>58353236
>http://twin.sci-hub.cc/ac1a63745360991b7b9a42390ab3faa8/krigel2016.pdf
If you're worried about you CCFLs in your computer, don't worry, they won't make you blind. They will make you gay, however.

>Looking at light damages your eye
Okay, so I should never go outside?

>>58355674
yes, in fact, the sun makes you go blind.

>>58352935
halogen is master race. It does everything an incandescent does while using less power and lasting longer. they get hot as fuck, tho. like, fry an egg hot.

>>58354683
i do realize that, but my point considering the single light bulb is still valid, no matter how you look at it.

>>58355262
Mine flickers at about 60Hz.
Only noticeable when you move things around fast enough at which point it's really distracting. Like living in a video game.

>>58355711
halogens are fine too my friend.
they basically are still incandescent in some way. i like halogens in the bathroom for that 3000k light but in the bedroom i really perfer a dimmed normal bulb

>>58355711
>lasting longer
Not really anon. Unless there are some really good halogens I have no idea about, the lifespan of single incandescent bulb is 2-3 times longer from my experience.

>>58355777
To me it's not just distracting, it literally makes my eyes red and veiny.

>>58355777
>>58355839
what do you mean by flicker? I've got a 1000lumen LED and even with filming with slowmo on my iphone I see no flickering.

>>58355954
The light output is not constant. If I wave my hand in front of my face I can see multiple images. It's a bit like being in a disco with a strobe light.

>>58353888
>how does physics work

>>58355954
It completely depends on the LED's power supply.
Cheap shitty power supplies (like the ones in affordable LED light bulbs) won't provide nice smooth DC, so the LEDs will flicker.

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Check this out before posting lads

>>58352935
>tfw our last old light bulb broke last month after serving our kitchen for like 15 years.
>tfw modern light bulbs break down after half a year.

>>58354530
>I'm a homo tho

>>58353781
THIS REQUESTING THIS.


>>58353791
Here only 40W and below. 25W candle light my ass.

>>58353877

Do they have online shops?

>>58353927
>>58353923
Where

>>58352914
>She likes flashing CFLs

Whew.

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LOL
all wrong

>>58357311
>>58357324
>>58357344
>>58357444
>>58357459
What's the use of posting it in frog?

>>58352914
>buying shitty PWM LEDs

>>58357311
This is an English speaking website.

>>58353781
I've seen them in some stores in eastern Europe, they are now called "traffic light laps" but are obviously identical to the old bulbs

>>58357488
>I have no clue whatsoever

>>58353781
They're everywhere in the UK. Okay, not everywhere, but I never struggle to find them. They're labelled as "rough service" bulbs so that they don't hit the restrictions on domestic bulbs.

I have a love-hate relationship with them. They waste an obscene amount of power, but all the alternatives seem to suck in one way or another.

Monitors tend to be in the 300-400 lux area, if they're good, so it'd be nice to have had that comparison, since that's probably the most repeated direct long term exposure people have. With work and all. Still seem like a good argument to use uv reduction film on glasses.

>>58353781
look up heating bulbs
that's how some are sold now

>>58353833
>I feared the EU was enlightened enough
>enlightened
>not "illuminated"
Step it up, sempai.

>>58353781
You can order 125W frosted incandescents from Ukraine.

>>58355404
http://www.tftcentral.co.uk/articles/pulse_width_modulation.htm

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>>58357324
>>58357344
>>58357444
>>58357459
>>58357477
Is that from a French equivalent of pic related?

>>58353781
I bought a year's supply on a bazaar in Bosnia!

>>58355556
He means the frequency of PWM switching, not the input AC frequency.

>>58353869
>Italianfag here
You got that right.

>>58353937
Better than the high frequency electronic stuff

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>>58358535
That's false, the electronic ballasts give higher efficiency due to the fact that the phosphor losses are reduced, also enjoy stroboscopic flicker and reduced lamp life due to preheating.

Programmed start T8 masterrace reporting in.

>>58352914
So, how we can fix the LED flashing problem?

>>58359138
see
>>58353815
>>58356600

>>58352914
>on rats

/thread

our sky is blue how the fuck doesn't looking at the sky cause retinal damage

>>58359260
It does.

>>58358823
This is also used for big places that need its lights up the whole day. Turning on and off all the time they will not last.

>>58359361
The ones made by good companies outlast magnetic ballasts

>>58359326
then we should detonate 100 nukes to induce a nuclear winter that would block the sunlight making the sky grey

fuck the blue sky I don't want my retina getting damaged

>>58359395
Nuclear winter also produces retinal damage.

>>58359395
get out of here STALKER

K so I'm moving out from my parents in a few months.
What kind of bulbs would a patrician choose? (Europoo, and no, I'm not buying 100W old school wolfram bulbs.)

Are leds really flickering?

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>>58360039
>Are leds really flickering?
I'd say most of them do, but you can find some that don't.

The bugger issue is their spectrum however.

>>58360039
this has been answered like a million times already

>>58360075
>all leds have the same spectrum

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So I reinstalled an old incandescent bulb a few hours ago because every evening/night I'd get headache and just generally my eyes would feel tired (like when you're looking into a telescope for too long or something like that), and I gotta say it feels so much easier on my eyes now. Although it literally uses 10 times as much power, but my health is more important for me. And anyways, I'll still use my LED bulbs in the kitchen and bathroom and whatever. But for reading and working the incandescent is much better.

I would be interested in buying some cheap spectrometer just to fool around with it. Are they any cheap?

>>58360118
Well to be fair, they all look almost identical to each other.

http://www.popularmechanics.com/technology/gadgets/reviews/gmp164/incandescent-vs-compact-fluorescent-vs-led-ultimate-light-bulb-test/

>>58360039
>Are leds really flickering?
Many cheapo LED lights use el cheapo Chinese LED control circuits that produce vast amounts of RF noise and flicker like mad. Given the lax QA checks and longevity we will have a serious RF smog going for 20 years minimum.

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>>58360191
yeah completely identical

>>58360273
I said almost identical you dumb fucking nigger.

>>58360299
...which is wrong

>>58353947
I don't know but I think nobody gives a shit, they're just lamps not weapons.
But i have to ask, why not just halogens? They're cheap as fuck, give you the exact same light and around 20-25% more efficient. And there are good chances you'll find em in your local store

>>58360370
Halogens emitt more light in the 500-600 nm spectrum.

Other than that, you're probably right.

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>>58353781
You'll be able to get them in the UK at some point in the future.

>>58360273
As long as there is no blue spiking (disrupts circadian rhythm) you should be fine.

The spectrum in your image is good, also, if incontinuous spectrum lights are so bad for you, why does literally all of Asia use them without problem, huh?

Are whites just genetically inferior?

>>58360168
>I would be interested in buying some cheap spectrometer just to fool around with it. Are they any cheap?
No. They're anywhere from several hundred dollars to a few $K. And you generally have to pay extra for software that will talk to them (unless you're on linux, it's all been reverse engineered there).

Oh, and no warm white LED has a spectrum that looks like that.

>>58362640
>Oh, and no warm white LED has a spectrum that looks like that.
What do you mean? All the ones I could find on Google look like that.

>>58362741
>What do you mean? All the ones I could find on Google look like that.
the spectrum you posted is, effectively, a green light bulb.

Does anybody have experience with reliably dimming those LED bitches without flickering? I was thinking on getting me some 100W equivalents and dim them whenever my eyes burn. But it seems dimming is generally a flickery business.

>>58363686
Dimming works by changing the pulse width, so it always ends in flickering.

>>58353236
blue light is blue light senpai

I always got the winter blues, but since I changed my lamps to old school bulbs, I don't have that issue anymore.

was planning to go full LED before I found out about this shit. dodged a bullet.

>>58363686
There are special LED drivers that can detect classic TRIAC based dimming and drive the LED accordingly, so you won't get any 100/120Hz flicker

ignore this retard: >>58364564

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>>58352914
>takes 15 minutes to reach full brightness
>mercury
>emission spectrum even more gross than LED

no

>>58353951
do you have a specific criticism of the methodology, or are you just a science denying moron?

>>58353781
>Regular bulbs are illegal in Europe.

Jesus christ you guys are really cucked...

>>58367365
being deliberately wasteful of limited resources *should* be illegal.

>>58352914
>not using kerosene lamp
electric fags btfo

>>58353781
Asda sell E14-SES halogens but theyre trash. All they do is fucking break

>>58353791
You can get more powerful ones online in the UK at least.

>>58352914
>CFL fags think their cheap chink bulbs last longer than incandescent bulbs

>>58367425
>Wow nice small buisness you have there
>it's a shame that you can't continue operation without the $300,000 enviro-tron9000 that is mandatory for all small businesses

>>58353936
I use special computer glasses that reflect portions of the blue radiation
No, not gunnars, these are not yellow glasses, they're ophthalmic glasses
If you look at them from the outside they tend to look blueish (since they reflect blue radiations) rather than yellowish (since they don't tint everything yellow)

>>58352914
>Long-term exposure to LED at 500 lux, in cyclic (light/dark) conditions induced retinal damage only in albino rats but not in pigmented rats

so much ago for nothing

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>>58360273
>Spectrographic analysis of an unknown-type 5mm warm white LED.
Given that the site is reviewing something like pic related,

fucking wew.

>>58357311
>>58357324
>>58357344
>>58357444
>>58357459
>>58357477
m-m-merci :3 will save and read it

So halogens are best for your health?

You retards, the sun emits the exact same type of light at an even greater intensity.

If you think you should avoid LED lights, then you should also avoid all sunlight too.

>>58371183
Except LED light can still be avoided easily, unlike sunlight.

>>58353992
Aren't RGB LEDs used in some displays?

>>58371517
>every monitor or display made since 2011 has an LED backlight
Yeah, nah.

>>58355711
Halogen is awesome.
I have a 300W one in my room lamp; it doubles as a lamp and a bug catcher.

>>58363686
Part of the reason why I'm sticking to Halogen is because LEDs don't dim, unless you buy a special bulb that costs twice as much.

>>58371517
You don't get it. The sun puts out far more blue light than an LED could ever produce. If you really think this light is harmful, you should be worried about avoiding the sun, not LEDs.

>>58372145
>LEDs don't dim

Not true at all, any decent LED will dim.

>>58355711
>halogen is master race
>>58355807
>halogens are fine too my friend.
>>58372077
>>Halogen is awesome.

I still remember once upon a time when halogens where considered literally worse than hitler, causing cancer and shit

>>58353781
>15 replies
Why is Europe so comfy? Also, just buy halogen or 3000K led, they're fine.

>>58360039
High-CRI(>90%) LED bulbs

>>58360168
an i1Pro with ArgyllCMS would suffice for approximate measurements
Argyll's spotread can measure the CRI but it's command line only

>>58352935
Enjoy your 5% enrergy efficacity faggot

>>58352914
more fake science to promote this obama lightbulb

sage

>>58373358
Wot?
Try to back it up man.

>>58372559
>any decent LED will dim

No. LED bulbs just need special circuitry to handle dimming, which has nothing to do with the quality of LEDs themselves and filtering capacitors. You can have a dimmable bulb with bottom of the barrel 60CRI Chinese LEDs, and you can have a high quality non-dimmable one (IKEA sells some).

>>58374549
100% efficient heat

>>58360039
>Are leds really flickering?

Cheap Chinese bulbs skimp on smoothing capacitors and just drive LEDs through a diode rectifier and a simple capacitive voltage dropper. These will flicker at 100 Hz worse than old linear fluorescent tubes. Also, the lumens stated on the box will be probably inflated as fuck.
If you're an europoo, go buy some bulbs from Ikea, they have almost no bad ones:
http://lamptest.ru/results/?brand_7=on&type_1=on

>>58372542
we should put out the sun because it can cause retinal damage

>>58368036
Except the energy saving bulbs aren't any more expensive. I'll bet they're cheaper, even.

>>58374896
>what is summer
Do you live in Finland?

>>58367365
>is on a technology board
>is against the advancement of technology
Literally nothing changed because LED's don't cost shit any more.

>>58374673
just jewgle/fuckfuckno/unbubble/startpage it. Back in the '90s halogen was found responsible for causing cancer, but it was also found that a thin layer of glass was enough to absorb the cancer rays - it "should" be enough for an halogen to be 360° layered with such glass, something that back in the days wasn't so common, especially for tubular halogens.

>>58376589
Damn :/
Geuss it's 100% safe now, right?

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>>58376318
perkele