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Technology

20th Century

Callsign Revlon

24th November 2019 Æthelberht 2739 Comments

On 25th October 1994 29 year old US Navy Lieutenant Kara Hultgreen was killed whilst attempting to land on the aircraft carrier USS Abraham Lincoln in the Pacific Ocean. The case remains highly controversial to [more…]

Engineering

Making A Ruby Laser – Part Five

25th September 2018 Doc Mike Finnley 2823 Comments

Melting a hole through steel: The above image needs a little explanation! The Doc messed up his camera settings and under exposed the image. So I loaded it into Gimp and played with the curves [more…]

Engineering

Making A Ruby Laser – Part Four

11th September 2018 Doc Mike Finnley 1856 Comments

The Doc’s ruby laser focused onto a lighter flint. The flint has been glued to the end of a match stick. The ‘explosion’ measures approximately 4 inches diameter. Interesting things to note are the ‘candy [more…]

Engineering

Making A Ruby Laser – Part Three

14th August 2018 Doc Mike Finnley 2666 Comments

More information on laser speckle can be found here:  Speckle pattern A Mirror Alignment Tool The most important part of constructing a ruby laser (or any laser with external mirrors) are getting the mirrors alligned [more…]

Dr Mike Finnley, Going Postal
Engineering

Making A Ruby Laser – Part Two

31st July 2018 Doc Mike Finnley 2178 Comments

(a ruby rod lit by two bright blue LEDs. Due to the IR filter in my camera the pink colour is actually red. What you are seeing is the absorption of the blue light and the [more…]

Engineering

Making A Ruby Laser – Part One

21st July 2018 Doc Mike Finnley 1750 Comments

Introduction For many years the Doc has had the desire to attempt the construction of a ruby laser. After six months of hard work, disappointment, late nights, lots of booze and a drained bank account [more…]

20th Century

The Spitfire, of course

29th May 2018 GrumpyAngler 3804 Comments

Ask anyone from the general public to name a great aeroplane or a great British fighter of WWII, and chances are they will say, without hesitation, “The Spitfire of course.” If you ask why you [more…]

20th Century

The Baby Boeing

2nd April 2018 Æthelberht 1494 Comments

I think most of us here don’t get terribly excited at the thought of the Boeing 737. It’s quite mundane, unremarkable, pedestrian even. I suspect more than a few of us here have been herded [more…]

Beware of Geeks Bearing GIFs, Going Postal
Engineering

I Learned About Flying From That

17th September 2017 Beware of Geeks bearing GIFs 0 Comments

When I was a young boy, I hated flying. I mean, really hated it. I think it was due to a traumatic flying experience on a transatlantic flight to Florida in a 747, back in [more…]

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Elsewhere on GP

  • A View From (Just Outside) The Greenhouse; It’s The Weather, Stupid!

    11th June 2024 2452 Comments
    I’m “penning” this missive a little earlier that I normally would, as I have a busy weekend coming up. Accordingly, it won’t be as up to date as I’d normally like, but I’m sure my [more...]
  • Postcard from Way-Els

    23rd July 2017 0 Comments
    Way-Els – The English words “Wales” and “Welsh” derive from the same Germanic root (singular Walh, plural Walha), which was itself derived from the name of the Celtic tribe known to the Romans as Volcae [more...]
  • Which Leader?

    22nd June 2024 2966 Comments
    Can you guess the leader each of these poems refers to…? Sir A. Tool I’m not a wealthy toolmaker I’m a wealthy toolmaker’s son. He made A Tool, not much cop That the UK he [more...]
  • DH, Going Postal

    “Yippee Ki Yay, Ya Wee Fanny” – A Polis Sco’lan Christmas Tale

    10th December 2018 2625 Comments
    Ah pure cannae be f**ked wi’ Chrishmas. Brengs back a loadae sh*te memries fae when ah wis a wean. Wha hod f**kin’ hee haw cuz ma da spent aw tha dole money oan drenk an [more...]
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    Polis Sco’lan – Equalities visit to Strathbolloch Primary School

    15th December 2017 1278 Comments
    Mrs McRoper, class teacher, addresses the wide-eyed youngsters in the assembly hall. “…and as you all know, diversity is at the heart of all we do here at Strathbolloch Primary. Through our visits to Glasgow [more...]

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