Something interesting I found while looking up Hungry Jacks (the Burger King franchise here in Australia) is that the angry Whopper is a normal menu item here but it seems to be only a seasonal/special item for Burker King.
See the chopped "rld" on the left? That's the link to the "World" section. To the left of that off the screen should be the "U.S." section. But there's no horizontal scroll bar or any way to get to it, or any way to even know it exists. Categories spill off the right too, and you can't get to those either. This anti-feature, in the name of accessibility has actually just made things worse.
For reference, here's the totally sensible result if you just don't enable "zoom text only": https://i.imgur.com/Kkd5aOu.png
Also even limited to visible spectrum, I have not seen any 99 CRI bulbs. The highest one I have ever found are the 98 CRI by YujiLED, but you pay around $35 for a single bulb. It is absolutely not "easy" to get flicker-free high CRI bulbs, let alone ones that cover the infrared range.
Phillips, GE, Cree, and others sell high-CRI bulbs.
10 years ago you had to work to find high CRI bulbs but could still find Cree bulbs pretty easily. Now you can get high CRI bulbs at the grocery store.
High CRI bulbs generally have low or no flicker because high CRI is toward the premium end of the market.
Almost all of the bulbs you can find at a hardware store (let alone grocery store) exhibit terrible 120hz flicker. I know because I've literally tried every single one. Also it's not hard to get "high" (~90-94) CRI while nonetheless having terrible deep reds.
Out of the manufacturers you listed, only Philips Ultra Definition (95 CRI, R9 90) have low flicker and good R9. Unfortunately they are poorly made and I have to keep buying new packs each year but it's more cost effective than Yuji for lesser used areas.
Also the claim from TFA is that NIR component improves visual performance (and I've read elsewhere that NIR also has health benefits).
How about Phillips flicker-free "warm glow" bulbs? I honestly have a hard time believing that they flicker because I can literally unscrew the bulb and watch it dim gradually over the course of a second. Which indicates to me that there's a capacitor in front of the LED drivers smoothing the current out. (Which I guess is required to be compatible with triac dimmers anyway.)
Never tried those, but speaking about flicker, some LED lamps flicker not because of the mains frequency (50/60 Hz depending on where you live) but because of their internal switching power supplies.
It's mostly a crapshoot even within the same model line. Even under "Philips UltraDefinition" some styles have high flicker while others don't. I'm not sure being dimmable is any guarantee of smoothing quality, in fact dimming is usually implemented with PWM as I understand so the easy solution to avoid flicker of chucking a smoothing capacitor on there might make it harder to implement dimming. (To dim properly without noticeable I think you'd have to PWM in the kHz range. Even cheap CFLs necessarily had the technology to operate on this frequency, for some reason it seems rare for LEDs to do it.)
They are specifically advertised to be compatible with old dimmers. I'm not an EE but old dimmers are implemented with triac which necessitates some juicy capacitors to hold the charge. Of course they could reintroduce flicker later in the pipeline for some reason, but why would they?
Huh, through experience with (mostly non-premium) LED bulbs, I've learned to interpret "gradually dims over the course of a second" an an early indicator of imminent bulb failure.
If you look at energy efficiency, it totally is. But the whole point in the discussion is that IR _might_ (according to the paper) have biological relevance.
You can't buy heat lamps? They are even more infrared and last longer.
Also LED lighting can have infrared, have a significantly more smoother spectrum curve and still last +20k hours without burnout. The cheaper bulb spectra that they show is a blue led + phosphor coating, but there are infrared LEDs, UV leds, and more. You can make quite the convincing sun simulation, even better than any incandescent bulb, but there is almost no demand for UV + Infrared super full spectrum lighting unfortunately. Only movie & theater lights come close.
>LED lighting can have infrared, have a significantly more smoother spectrum curve and still last +20k hours without burnout
Do you have a link to a bulb that you can purchase meeting all these criteria? The only one I'm aware of was this obscure "StarLike" that was never actually sold in bulk. LEDs can be made good in theory sure, but in practice they are all terrible in light quality compared to a standard incandescent.
You would need to see the spectra of the various LEDs available and create a mix along with phosphor mixes. The closest thing is something like a BLAIR-CG light engine from aputure where they have something like 9 different colors of LEDs that mix together, but they don't put any infrared leds in them because they are for movies and they don't put any UVB or proper UVA leds. But there are infrared, UVA & UVB LEDs that you could apply the same kind of engineering principle to make something that closely follows the sun spectra.
No, you can't buy them as bulbs. The closest thing is those red light therapy panels that include them.
There are efficiency standards and laws for large appliances.
This isn’t some kind of controversial subject. Ensuring home appliances don’t overconsume energy is beneficial for everyone in society.
You don’t want to have brownouts, blackouts, or run out of heating gas/oil in the winter.
You bring up the idea of regulating computer equipment power efficiency as if it’s crazy talk but it’s a real thing in concept. Governments do offer guidance and sometimes regulate computer efficiency. They have efficiency standards (e.g. Energy Star) as well as relying on industry standards (e.g. “80 Plus”).
Take a look at your computer monitor or TV box and it probably has an energy star logo somewhere if you live in the US.
The US federal government and other state and local agencies will not buy computer products that aren’t energy star compliant, and encourages businesses and individual to follow similar standards. Other countries might regulate further than these (dis)incentives.
And if you bring up data centers, those are considered productive industry that has its own regulations different than home regulations. Plenty of things legal in industrial series aren’t legal in your house.
High-powered computers are a niche issue, which means on a society level there's little benefit to restricting them.
Lightbulbs on the other hand affect all of society, so they've got a much larger impact to the overall CO2 budget.
Additionally, the average person uses a laptop or mobile devices, all of which use less power than even a single typical incandescent bulb (and people usually have many lightbulbs).
Replacing incandescent bulbs with LEDs saves a lot of CO2 at basically zero cost, while getting rid of computers saves less CO2 for a much larger economic impact.
And even the effect described by this article has to be looked at in context, considering most of the light people experience in a day — and have experienced for the since homo sapiens existed — is natural sunlight, even in northern Europe during the winter (that's why EU law mandates windows with sunlight in every office, apartment, bedroom, etc.)
Something I did a little while ago was read through most of Busybox vi's source code, and work out my own simple documentation page with most of its options.
It doesn't do visual mode but it does still work with registers etc.
CVT is not the same as "automatic transmission", but it is a subtype of automatic transmission, i.e. CVT is a kind of automatic transmission, but there are also other kinds of automatic transmissions, which are more frequently used.
"Automatic transmission" just means that you do not change gears manually, which is also true for CVT.
Indeed. Extra observant people will notice that the "Ubuntu" username was used only twice though, compared to "root" that was used +3700 times. And observant people who've dealt with infrastructure before, might recognize that username as the default for interactive EC2 instances :)
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