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Science

19th Century

Milestones in Nineteenth Century Firearms Development, Part Five

4th February 2019 Tom Pudding 2268 Comments

Introduction By inducing a projectile to spin around its own axis its flight is stabilised and accuracy and range are vastly improved. Rifling a barrel by cutting spiral grooves in a variety of forms and [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part Four

28th January 2019 Tom Pudding 3044 Comments

Introduction Every month my gun club holds a guest day when members can bring along friends and family to ‘have a go’ with their firearms. Maybe it’s because we were raised on a diet of [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part Three

21st January 2019 Tom Pudding 3518 Comments

Introduction Although the flintlock ignition system was technically advanced for its time, it wasn’t without its shortcomings. Flintlocks require careful setting-up and constant maintenance and adjustment to be reliable. They also have a relatively slow [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part Two

14th January 2019 Tom Pudding 4379 Comments

In my introductory article we saw that by the beginning of the 19th century the flintlock was firmly established as the state-of-the-art means of ignition in military and sporting firearms. In this article, we will [more…]

Hobbies

The Basel Problem

14th January 2019 OldTrout 5032 Comments

One sometimes gets very interesting results when one turns divergent sums upside down. The Basel problem was asked by Pietro Mengoli in . He asked what is the exact summation of the reciprocals of the [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part One

7th January 2019 Tom Pudding 3769 Comments

Some weeks ago, and quite by chance, a friend offered to sell me a rare mid-19th century rifle, the design of which I had long found to be of interest. Although I was not at [more…]

Arts

Going Postal New Year’s Eve

31st December 2018 Going Postal 3934 Comments

© EJ 2018  

Arts

Wankpuffin’s 2018 Going Postal Fireside Christmas Special Spectacular

25th December 2018 Going Postal 5252 Comments

© EJ 2018  

Hobbies

The Möbius Function

29th October 2018 OldTrout 2281 Comments

The Möbius function is denoted by , where is the Greek letter mu. Depending on the factorisation of , the function takes the values . The last says that if is even, then and if [more…]

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