Computing
A Simple R6G Dye Laser – Part 3
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…]
Technology
Computing
A Simple R6G Dye Laser – Part 2
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
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
Mobile Phones in Schools, Friend or Foe?
So the utterly lacklustre Education Minister , Gavin Williamson a man with a personality that could challenge that of a stone and lose, has decided to ban mobile phones in schools. Well, I suppose you [more…]
20th Century
Of Scherbius, Balme, Lee, Long, Pearce, Dolley, Roe, Wileman, Hargreaves, Trotter, Fasson, Grazier, & Brown….
It is indeed strange that the names of the people listed in the article title should remain so completely unknown today. Great innovators of the Weimar Republic during the 1920s, people like Gropius in architecture, [more…]
20th Century
Enigma deception
A typical three wheeled Enigma with inspection cover open and showing the three wheels in position. When the Second World War began, three wheels became five. There is a scene in the film The Imitation [more…]
Arts
Postcard from Romania – Part Three
Part Two of the Postcard from Romania saw me waxing rhapsodic about the Museum of Pharmacy at the Mauksch-Hintz House in Cluj. After a fantastic visit, when we spent hours marvelling at the extraordinary collections, [more…]
Computing
Welcome to Dingleberry
It isn’t my fault, honest, you may recall a certain nameless puffin of this parish who has a thing for shunting and the associated models who some time ago started to make a small model [more…]
Animals
Cnuteneering, Part Thirteen
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…]