There is a small group of building materials that go round in a circle, and lime is the clearest.
The cycle is truly closed. A rock is heated to drive…
Source: Wikipedia
There is a particular kind of near-miss in the history of technology, where somebody builds the thing and does not realise what they have built.
Sound recording has an…
Combustion is a push. Everything in an engine exists to convert a series of pushes into smooth rotation, at speed, repeatedly, while managing the heat and friction that produces. Here…
There is a constraint on ships that has no equivalent on land and that determines almost everything about how vessels are shaped and sized.
The constraint is that a vessel…
There is a widespread assumption about roads that is understandable and backwards.
The assumption is that the hard black surface is the road, and that what lies beneath it is…
The organism does one thing: it consumes sugars and produces gas and alcohol. Bread keeps the gas and loses the alcohol; brewing keeps the alcohol and loses the gas. Everything…