Recent content by Paul_in_Maryland

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  1. Paul_in_Maryland

    Article: the switch to outdoor LED lighting has completely backfired

    It's an example of the so-called Snackwell effect period since LEDs use less energy, municipalities are using more of them. Article at https://gizmodo.com/the-switch-to-outdoor-led-lighting-has-completely-backf-1820652615
  2. Paul_in_Maryland

    Cree unveils WaveMax futuristic LED office fixtures

    "With 'WaveMax' technology and innovative new designs, the North Carolina manufacturer plans on bringing office lighting into the 21st century." Article.
  3. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    I've directed our HR chief to this thread so he could understand why the new lighting is an issue. Hi, Tom! :wave:
  4. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    It's a legitimate question, Anders. In fact, I thought it was fluorescent until someone reminded me that we had received this memo:
  5. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    I think you're correct. That's what it looks like. As the photo shows, the reflector is brightest where it's close to the lamp.
  6. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    Here's a cellphone shot of the fixture closest to my cubicle. I boosted the clarity and sharpness but didn't touch the color, saturation, or contrast. Comparing the photo to the light, I'd say that the photo is about 2 stops underexposed--not surprising, since I used no exposure compensation...
  7. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    These are great suggestions, SkyeLED, CoveAxe, Qship1996, and angerdan. I've long been a fan of 4000K to 4300K lighting. I haven't checked prices; In any case, now that the dirty deed is done, I fear it's too late to ask the landlord to pull out the LEDs he just installed and return them. And...
  8. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    Re: Help! My office building just switched to hideous fluorescent lighting I think they're just new tubes. In my office of 24 people, all the replacement bulbs were installed overnight.
  9. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    Re: Help! My office building just switched to hideous fluorescent lighting skyled, I was correcting my title and text as you were posting your question! We went from, I would guess, 5500K fluorescents with a CRI of maybe 82 to LEDs with a color temperature north of 6000K and a CRI well below...
  10. Paul_in_Maryland

    Help! My office building just switched to hideous LED (not fluorescent) lighting

    This morning, my officemates and I arrived to find that our landlord had replaced our 48-inch fluorescent overhead lights with energy-saving NOT fluorescent LED tubes. The new tubes cast a beam that can only be described as ghoulish and soul-sapping. It skews blue. It's far from full-spectrum...
  11. Paul_in_Maryland

    For our Canadian members

    I saw this news clip in a feed of funny stuff from HappyPlace and had to share it!
  12. Paul_in_Maryland

    People in developing countries are leapfrogging our 19th century technology (Slate)

    Slate article: "[nearly] unbreakable LEDs are easily paired with solar power, and so in poor communities, what seems excessive to us becomes a long-lasting investment that bypasses both inefficient incandescents and the lumbering power grid."
  13. Paul_in_Maryland

    4Sevens Preon Review (1xAAA & 2xAAA): RUNTIMES, BEAMSHOTS, and more!

    Yes, they will. I put an L92 into the high-CRI Preon that I bought my daughter when she entered medical school.
  14. Paul_in_Maryland

    Lithium 1.5v rechargeable batteries... why not?

    For now, the PowerGenix nickel-zinc AA cell comes closest to your 1.5V ideal rechargeable: 1.6 to 1.8V under load, outstanding safety, great cold-weather performance, and cheap. The main drawbacks are: fickleness (failing at an unusually high rate when overdischarged), a self-discharge rate...
  15. Paul_in_Maryland

    Sulfur-based battery {4X capacity of Li-Ion}___________

    Another article on this research appeared today on Engadget.
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