Above photo: John Harrison’s H1 marine clock, 1735. An early example of a GPS clock, if you like. Note the four brass spheres (one not visible) that replace a traditional pendulum helping the clock to [more…]
Once upon a time there was a great city called Khronathea. It was ruled by King Kron and at its center was the temple of time itself: The Temple Of Khronos. The people of Khronathea [more…]
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…]
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…]
There are lots of technical problems in designing a liquid fuelled rocket; such as how do you light it, relight it, how do you stop combustion instability shaking the rocket to pieces, how do you [more…]
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…]
There are lots of weird and wonderful schemes for powering spacecraft, but in practice only three classes of engine have been built today that could realistically power a spacecraft in the next few decades. (aside: [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…]
The amount of times I see people posting here – “World ending asteroid hit us please now the world is too crazy!” Well I am here to bring a mild warning, many people understand what [more…]
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