We’re surprised that we haven’t come across any of [Robert Murray-Smith’s] projects before. Looking through his collection of YouTube uploads proves that he’s a very active amateur chemist ...

Making a glass Fresnel lens with its concentric rings requires even more work, but as the ever-resourceful [Robert Murray-Smith] shows us, a Fresnel lens can be made from far more mundane materials.

But as demonstrated by [Robert Murray-Smith], it’s possible to generate electrical power from wind without any moving parts. With simple components, he shows how you can build a device capable ...

It’s this last type that [Robert Murray-Smith] has taken a look at, making what he positions as the simplest inverter that it’s possible. If you’ve ever played with relays, you’ll probably ...

[Robert Murray-Smith] goes into detail in this video (here’s a link cued up to 1:50 where he begins discussing the magic lever) There is a lot of naturally-occuring reciprocal motion in our ...

The huge turbines visible on the horizon from where this is being written are the upper end of the scale though, and along comes [Robert Murray Smith] with the opposite, probably the simplest and ...