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…]
Ever heard of a bike fitting? No not a cycle having a epileptic fit, this is the process of having a bike adjusted to fit you. I know there are a significant number of you [more…]
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…]
Before you all start, no not the RP sort of cruising. Prior to the brewery bash, I was lucky enough to enjoy our family holiday. Family in this case being myself, Missus, three teenagers (14 [more…]
When is a mountain no longer a mountain? When it becomes a hill. Sound strange? Read on. A mountain is a large land form that stretches above the surrounding land in a limited area, usually in the form of [more…]
Around Easter in 2017 I got hold of Warlord Game’s skirmish game set in ancient Japan, Test of Honour, bit of a bolt from the blue really. Bought it as much to support my local [more…]
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…]
“Rise above oneself and grasp the world” These are awarded every four years for advancement in the field of mathematics. There is an age limit of 40 on the recipients. It is a recognition of [more…]
Euler’s totient function counts the number of positive integers up to that are relatively prime to , where is considered to be relatively prime to all . These numbers are called the totatives of . [more…]
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