Animals
Project Fishy
Anyone who has read any of my articles knows I do like a good project. If I know that I’m going to be stuck in the house, looking after kids with bad weather, I need [more…]
Hobbies
Engineering
An Atomic (Alarm) Clock – Part 2
You might have been to a night-club or concert and seen your clothes light-up. That’s because the organisers of the said venues have had the stupid idea (in my opinion) of illuminating the place with [more…]
Hobbies
The Orbit-Stabiliser Theorem
Some notation and definitions. is a finite group. is the order (size) of a group. is a finite set. is the order (size) of a set. Group action : For an action of the group [more…]
Hobbies
Crossword No. 36
First correct entry out of ‘the hat’ wins a GP mug – the only way you can now acquire one! Email entries to me by 6.00 pm today subject ‘Crossword’. Contact here on email Last [more…]
Arts
The Geeks Guide To Brewing A Decent Beer For 30p A Pint
Who likes a beer? Not me. No. I don’t like a beer. I like loads of beer. Loads. And all the nice tasting craft beer like Old Hooky (https://www.hooky.co.uk/) and my local, Surrey Hills brewery. [more…]
Engineering
An Atomic (Alarm) Clock – Part 1
I like to find electronic oddities on eBay and then try to make something interesting out of them. Before the internet I used a company called Greenweld Electronics for surplus and unusual electronic components. In [more…]
Hobbies
Proof by Necklaces
A proof of Fermat’s Little Theorem using necklaces. , where is prime and is any integer with gcd. Multiply both sides of the congruence by : Which gives : Subtract from both sides : [more…]
Arts
3D Printing – a layman’s guide
The latest thing to grab the keen tinkerer’s attention is 3D printing. This has taken off in a huge way in the USA, and is gaining fans in the UK too. The concept is surprisingly [more…]
Hobbies
Crossword No. 35
First correct entry out of ‘the hat’ wins a GP mug – the only way you can now acquire one! Email entries to me by 6.00 pm today subject ‘Crossword’. Contact here on email Last [more…]