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Physics

Computing

A Simple R6G Dye Laser – Part 3

28th July 2021 Doc Mike Finnley 0

If you’ve been following along (well done you!) then you might recall that we need a fast switch that works at a very high voltage for the laser’s pump lamp and, indeed, for the laser [more…]

Computing

A Simple R6G Dye Laser – Part 2

21st July 2021 Doc Mike Finnley 0

Lamp Light And Laser Light Pulsed lasers, like this, use an intense burst of white light (lasting fractions of a second) to stimulate the electrons in the laser’s gain medium. In the above photo you [more…]

Computing

A Simple R6G Dye Laser – Part 1

14th July 2021 Doc Mike Finnley 0

Introduction First of all, it’s great to see that Going-Postal is still up and running. It’s always a pleasure to write an article and have it published here. It’s also good to see a lot [more…]

Arts

Postcard from Romania – Part Two

19th May 2021 SharpieType301 0

Part One of the Postcard from Romania covered our arrival in the beautiful city of Cluj-Napoca, in May of 2018. In writing it, I tried to dispel just a little of the negative impression many [more…]

Computing

Cnuteneering, Part Twelve

1st April 2021 El Cnutador 0

Welcome back to Cnuteneering, where the possible is made more difficult by bone headed ignorance, overenthusiasm and pointy metal things being brought together. You may want to refresh your memory on the project in: Part [more…]

Computing

Cnuteneering, Part Eleven

22nd March 2021 El Cnutador 0

This one goes up to eleven! Welcome back to Cnuteneering, where the possible is made more difficult by bone headed ignorance, overenthusiasm and pointy metal things being brought together. You may want to refresh your [more…]

Martianonlooker, Going Postal
19th Century

John Scott Russell

3rd March 2021 Going Postal 0

Imagine, if you will, that you have decided to go for a horse ride along a canal towpath. You see a canal barge making its way along the canal and in front of the barge [more…]

Engineering

Cnuteneering, Part Three

16th November 2020 El Cnutador 0

Welcome back to Cnuteneering, where the possible is made more difficult by bone headed ignorance, overenthusiasm and pointy metal things being brought together. You may want to refresh your memory on the project in: Part [more…]

19th Century

Holography, Part Four

9th September 2020 Doc Mike Finnley 0

Holograph Examples The PFG-01 holographic film that I’ve used in the examples below is ideally suited to making transmission holograms but it can also be used to make reflection holograms. Reflection Holograms One of the [more…]

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