The useful question about any old route is what it was for, because the purpose determined the line - and routes made for different purposes look completely different on the…
Maya Linton
The conversion of sound to signal was solved early and has changed comparatively little in principle. Connecting any telephone to any other took a century of engineering. Here are fourteen…
There is a question that sounds naive and turns out to open a real research problem: does everybody divide colours up the same way?
The physical answer is that the…
There is an assumption embedded in how nervous systems are usually described, and it comes from studying animals built like us.
The assumption is that a nervous system has a…
There is a small category of technologies where the modern industrial version does exactly what the original did, only faster, and paper is the clearest example.
Most processes have been…
There is a class of behaviour that everybody performs, everybody recognises, nobody controls and nobody can explain, and yawning is the most conspicuous member of it.
It occurs in essentially…