As part of a large, funded research project, I’m looking for locations where people spend large amounts of time under flickering lights. If you know of such locations, please reach out to me! Please don’t reach out to the owners of the lighting yet, that would be the job of the lead researchers.

You can verify the lighting flickers by setting your phone to record on super-slow mode and record a short video. If the resulting video flickers like this, or this you’re on the right track!

The best locations for this research project have ballast-bypass lighting, where the old fluorescent ballast was removed and replaced with LED-based tubes. But any area where people spend lots of time under flickering lighting is worth mentioning!

Great locations would be:
– locations or organizations where tens to thousands of people use lighting that flickers
– anywhere in the US
– K-12 school classrooms
– offices
– academic testing centers
– industrial work spaces

Finding these locations could make a big difference and your help is needed!

To recap: If you know of places where people spend large amounts of time under flickering lighting, please message me. You can message here or email me at Flicker@Lee.org.

Please forward this to anyone you think should get it.
Best regards,
Lee Sonko
lee.org/flicker
#FlickeringLightProject

  • JTL replied to this.

    gadlen As part of a large, funded research project, I’m looking for locations where people spend large amounts of time under flickering lights

    Welcome! Be curious to see what "large, funded research project" entails.

    Interesting site by the way 🙂

      moonpie Understanding who is affected by what is complex and not fully understood! This study is an effort to increase that understanding. We're looking for people for the study.

        moonpie When the light is square, sawtooth, and triangle waves especially when high amplitude affect quite a huge chunk of the population

        I also wrote here ~half year ago, wave type matters. Still keeping this idea

          6 days later

          moonpie Moonpie, that is excellent research. The state of the art in flicker research is moving forward. Notably, the IEEE 1789 standard doesn't cover high frequency flicker well enough, notably the stroboscopic effect and phantom array effect, and possibly migraines. And PstLM (subscript "st", superscript "LM") is challenging to measure, and also doesn't cover high frequency flicker well enough, given our more recent understanding of the negative effects of flicker. Lighting can follow the modern "standards" and still be problematic.

          We're still looking for locations to do this research. The best locations have lots of people that stand under flickering lights for long periods of time. See my original message above. :-)

            A good location for people standing under flickering lights for a long time is probably the new costco warehouse they built to the north of me. The older one that is close by uses xenon arc lights in the ceiling. Stable lighting. The new one uses LEDs in the same type of fixture but arranged in a circle inside the fixture. I didn't like it. It felt off to me. I'm sure if I had a device with me, it would have picked up flicker.

            9 days later

            moonpie Yes, electric lights have been flickering since their invention! I suppose I am using the term "flickering" as a stand-in for "flickering that a person notices and is bothered enough that they care to respond to this plea."

            So, if there are any people out there in the LEDStrain community that knows of where people are spending a lot of time under lights that flicker enough so that they, or others, possibly notice or are bothered by, please reach out to me!

            Thanks again!
            Lee

              15 days later
              gadlen changed the title to Looking for challenging lighting locations for funded research .
              dev