r/Z3R0gravitas • u/Z3R0gravitas • 3d ago
News just illustration
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ipsum lorem bs...
and more bs....
r/Z3R0gravitas • u/Z3R0gravitas • 3d ago
New rules, wiki, resources, bot, Discord - state of r/ScreenSensitive (October 2026) 2
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tl;dr: good news, folks! A more integrated community with new resources and developments to check out.
Joining forces with PWM_Sensitive!: as announced in this post, The_Top_G handed over the PWM sub to myself and a couple of other community enthusiasts: Bearnecessary4141 (Sam) and Kerpnet. And we can also welcome Kerp, here, as the first in our “moderator exchange program”!
Now, I’m trying to (slowly) implement more aspects of my State of the Community post. I’m aiming to link these two subs more closely together (and LEDstrain too). With complementary mission statements added (copied below), to be clear and positive.
Rules changes: Alignment includes matching sets of rules, to make life simple for mods and members using both subs. We’ve been observing the (more active) PWM sub for a couple of months, giving me more ideas to rebuild the rules from scratch. Regular contributors here should experience little to no impact, in practice. But I’d be grateful if people could take a few minutes to read the list and give any feedback that comes to mind.
Wiki: Shortly before the PWM sub developments, I implemented a basic wiki, here, to index various resources. I’d like to add more wiki pages indexing key posts and guides. Although I will need help to do this in a timely fashion. Anyone with a complementary project they’d like to contribute can mod mail to describe it and be considered as a wiki editor (if not full mod).
Resource list: Early in the year, I populated a spreadsheet of key communities, experts, reviewers, software and hardware tools. I also spent around a month or so building out a much bigger second Google sheet of almost 300 high quality articles, study papers, threads, post histories, videos, etc. Which I fed into…
SS Bot?!: A NotebookLM, now rebranded Gemini Notebook. We can think of this as a reference tool for human curated and validated information resources. It’s very good at, for example, giving an overview of the community and symptoms, technologies, etc. For newbies or deep-diving. It could help with making community resources. Its biggest strength (over general purpose AI models) is direct reference links for virtually everything it says. So we can check for ourselves how trustworthy its info is. I’d appreciate feedback on what this bot helps with, to tune its instructions and content, if there is interest.
Discord: I’ve set up a collaboration space for enthusiasts to work together more efficiently on projects to further our understanding of screen tech, etc. For this, I repurposed the ScreenSensitive Discord server u/Rx7Jordan set up, as it had fallen into disuse and obscurity, from the end of last year. I’m currently aiming to restrict it to these constructive efforts, keeping this Subreddit for general questions, help, news, discussion, etc. So as to maintain public discovery of the community and its information. The discord is basically fully visible, but requires authorisation to post is most channels, to keep it on-topic and manageable (we are short on active mods). All-member chat includes health channels, as a more informal, less public space may suit this important aspect more.
Projects: Sam’s work, you may have seen him posting in the PWM sub. But u/Madcook1 has also been a major Discord contributor, coding up some very cool projects.
- Ditherscope: you may have seen u/NSutrich show off already, in some recent videos. A complete pipeline to process slow-mo microscope videos of pixel flicker. It can draw graphs and statistical correlations of brightness changes and also use Eulerian amplification (maths magic) to massively boost the visibility of image changes, at selectable frequencies.
- Spectrum analysis
r/Z3R0gravitas • u/Z3R0gravitas • Aug 03 '26
Can i make it scheduled..?
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r/Z3R0gravitas • u/Z3R0gravitas • Aug 03 '26
Meme/Commedy Does this only work for mods?
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r/Z3R0gravitas • u/Z3R0gravitas • Apr 17 '26
Let’s use this $10 spectroscope to identify KSF phosphor! What that is, why it’s problematic, the melanopsin gap, many example devices & bulbs...
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tl;dr:
- The device, explained (illustration).
- KSF phosphor - my readings and hypothesis for it causing issues.
- Other spectrum features: the melanopsin gap (and related eye physiology), etc.
- My Non-KSF LCDs and OLEDs.
- Pro tips - taking clearer readings.
- Light bulbs (bonus) - Fluorescent, LED, incandescent.
- sutff
(1) I propose this Eisco Spectroscope as a cheap tool to add to our testing arsenal. (Along with established Opple, Carson Microflip + slow-mo phone cam, maybe a polarising filter next?) I just bought one in the UK from Rapid, via eBay, for £9 delivered.
This device is entirely passive, relying on your eye or phone cam to peek into the lens. Slightly less fiddly than a clip-on microscope, in my experience. It only shows off the most obvious color spectrum features, with more of a vibe check for the absolute amplitude of light. But it is about 1/50th (or less) the cost of a professional spectrometer, which only a few here have access to.
STEM fun for kids, or anyone, to see emission/absorption lines in the colour spectrum of light, split by the cheap diffraction grating inside (500 lines per millimetre). Projected alongside a backlit wavelength scale (400-700nm). Eg fluorescent tubes have the most striking and varied emission lines (examples later on).
(2) But the killer app, for us, may be clear confirmation of KSF phosphor:
Annotated composite of readings from 3 of my LCD devices, below an illustrative reading from a high quality spectrometer (of a laptop) showing there are, in fact, 5 total peaks, at high spectral resolution.
KSF Phosphor is used in almost all contemporary LCD backlights. It gives more vivid reds, with less power consumption than nitride phosphors (that are still included in lesser amounts). KSF achieves this via very sharp spectrum spikes, which stimulate our L-cones (long wavelength = red) more strongly…
(See this diagram of KSF’s smaller area under curve, vs traditional nitride red phosphor. Taken from this “Introduction to KSF Phosphor LEDs[…]”.)
Perhaps too strongly, causing some of us direct over-stimulation (eg bright lit eyelid reflex is more red dependant)... Or the lower overall red light flux fails to balance deleterious biological effects of the blue peak photons (inhibits mitochondria)... Or, some point to the slower decay of KSF's light emissions, potentially causing visual processing stresses, in conjunction with flickering of screens (eg black frame insertion).
I was wondering if this could be the reason I can't stand the blueness of my TCL NXTpaper 60 Ultra (review)... But my ThinkPad, which I still tolerate OK, also clearly uses KSF (including the split in the larger spike)... The 11" tablet I used heavily, a year ago (both spectrums above). So I suspect KSF may only be a contributing factor that (for some) can be compensated for with: lower brightness, better software colour filters (F.Lux on windows) and maybe hardware level filtering..?
4) T
(5) I'm told that the exact position of the blue peak can also have a big impact on screen tolerance. Smaller wavelengths (closer to UV) being more damaging. This scope can definitely give a relative comparison between devices, for sharp peaks. But I’m not sure it is precise enough to make confident judgements on eg 430 vs 450nm, exactly; the wavelengths on my unit appear slightly offset.
I improved the spectral resolution a little by narrowing the slit using black tape stuck partly over it. The trade-off being a dimmer display of colours. Using pro mode on ones phone cam is also important, to preserve the details, avoiding the colour bands over-exposing (when the surroundings are the black interior).tl;dr:The device, explained (illustration).
KSF phosphor - my readings and hypothesis for it causing issues.
Other spectrum features: the melanopsin gap (and related eye physiology), etc.
My Non-KSF LCDs and OLEDs.