robertstawell

17 photos tagged robertstawell, from 1 member of Flickr Commons.

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1900
2021

 

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The last upload was November 2025.

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Double diaphragm, double diaphragm

  • 12 older comments, and then…
  • National Library of Ireland on The Commons said:
    We will award (at our own expense), half a dozen (virtual) sticky buns to the first person who tells us what exactly the Type ZW1 does and what is the application that the Commissioners of Irish Lights may have put it to?
  • Suck Diesel said:
    “AI Overview
    The images depict a double diaphragm submarine emitter, labeled as Type ZW1, with a sound output of 250 watts. Figure 31 shows a diagram of the emitter, highlighting its internal components marked A and B. Figure 32 is a photograph of the emitter itself.”
  • Suck Diesel said:
    Wild guess, is this attached to a ship to identify itself to a submarine that it caries medical or other non hostile supplies?
  • National Library of Ireland on The Commons said:
    Suck Diesel Plausible, but I would need some evidence.
  • Suck Diesel said:
    Of course, ‘submarine’ just means underwater, not necessarily a U-boat.
    I don’t think that Irish Lights has anything to do with U-boats so this device is used to emit a sound underwater, but purpose unknown

You've heard about my capers when lenses I've to clean

  • 15 older comments, and then…
  • Swordscookie said:
    So Morning Mary has branched out to being an influencer on Flickr😜
    I wouldn't give up the day job just yet !
  • National Library of Ireland on The Commons said:
    Swordscookie We have books on every subject here, you name it and we will find you a solution!
  • O Mac said:
    90% of lighthouse keepers are right handed. Should the photo be flipped?
    www.irishlights.ie/
  • National Library of Ireland on The Commons said:
    O Mac you make a reasonable point I will FLIP it now. Flip it!
  • beachcomber australia said:
    This fellow uses TWO parts isopropyl alcohol, two parts of distilled water, and TWO drops of Woolite. But I suppose he is in colour, not black and white - www.youtube.com/watch?v=JJpzyWGPREE

The prize? A sticky bun with extra toffee!!!

  • 15 older comments, and then…
  • Wendy: said:
    my guess --Cape Clear island
  • National Library of Ireland on The Commons said:
    Wendy: I hope you are right!
  • Mike Grimes said:
    Thinking the white rocks are chalk, I googled photos of "chalk cliffs Ireland". there are some in Portrush in Antrim of which the geology in the Alamy picture that appears near the top looks somewhat similar.
  • National Library of Ireland on The Commons said:
    Mike Grimes Mike I hope you win the bun, but I need more evidence!
  • O Mac said:
    Rathlin could be another possibility... It has cliffs with chalk outcrops. mvdirona.com/trips/britishisles2017/images/IMG_2931.web.jpg from mvdirona.com/2017/08/rathlin-island/