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Dumb scuba products

Discussion in 'General Scuba Equipment Discussions' started by Moogyboy, Nov 27, 2019.

  1. The Ruttmeister

    The Ruttmeister Angel Fish

    # of Dives: 0 - 24
    Location: Bay Area, CA. USA
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    Very interesting.

    I suspect because my background is stage lighting, where we generally are looking for fluorescence ONLY (blacklight scenes). If we used blue light you would be able to see the performers, not just the puppets.
    Plus the materials I'm used to getting to fluoresce are all man made, and it seems behaving very differently to biological materials.

    I stand corrected (underwater at least... for stage I stand by my post!).

    The stuff about LED construction and relative efficiency stands though.
     
  2. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
    8,305
    6,032
    113
    Are your stage Black Lights UVA or B or C? What frequency are they?
     
  3. The Ruttmeister

    The Ruttmeister Angel Fish

    # of Dives: 0 - 24
    Location: Bay Area, CA. USA
    63
    32
    18
    Good question. They just came in a box marked UV... Not kidding, no idea what spec. Mostly we would use 'UV' florescent tubes, often with 'UV cannons'. And moving lights often have a colour filter that is a UV pass-through... Although I stopped that stuff about 10 years ago, just before everything started going LED

    Doing some googling I suspect that the stage UV stuff is actually in the 'near UV' spectrum, not 'true' UV. And those of us in the stage lighting world go around calling ~450nm 'UV', when its not actually that. Not technically at least.
    Which is fascinating, and lines up with the bio-fluorescence data. It seems semantics over technical accuracy was my error!
     
  4. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
    8,305
    6,032
    113
    Interesting. Thanks.
     
  5. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
    12,959
    9,393
    113
    More visible than (fluorescent) yellow or orange?

    Color me sceptical.
     
  6. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
    12,959
    9,393
    113
    But is it because of the negative ions and the crushed water molecules?

    That's the biggest load of unscientific crap I've read since that time I inadvertently wandered into Gwyneth Paltrow's webshop. That's 15 minutes of my life I'll never get back.
     
    Bob DBF and tridacna like this.
  7. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
    12,959
    9,393
    113
    I'd rather blow my safety stop than drown.

    OTOH, that device looks like a very good tool for causing an embolism. So I think I'll pass.
     
  8. Storker

    Storker Divemaster

    # of Dives: 100 - 199
    Location: close to a Hell which occasionally freezes over
    12,959
    9,393
    113
    My current dive computer has audible alarms. Neither I nor my buddy ever hear them, because we're wearing 5-10mm neoprene hoods.

    Regardless of the fact that I have a hearing impairment.
     
  9. Bigbella

    Bigbella Barracuda

    # of Dives: I'm a Fish!
    Location: San Francisco
    379
    255
    63
    [Mod edit]

    Christmas is but a couple weeks away. Remember that “If you feel like it’s [the eggiweg's] been drained of energy, recharge it in the full moon just the way you would a crystal . . ."
     

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  10. Bigbella

    Bigbella Barracuda

    # of Dives: I'm a Fish!
    Location: San Francisco
    379
    255
    63
    Eh, embolism schmembolism . . .
     

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