The temperature is fixed by the liquid rather than by the heat applied, which means turning the heat up past a certain point adds agitation and nothing else. Here are…
The tissue is dense and most flavour molecules are large, so the liquid stays near the outside. Once that is understood, what a marinade is good for changes completely. Here…
Two materials are held apart in a state where one wants to give up electrons and the other wants to take them, and the separation is the entire trick. Here…
The film is not a solid thing. It is a layer of water held between two surfaces, and everything a bubble does - its shape, its colours, its lifespan and…
There is a question about corrosion that people rarely ask and that turns out to be the whole subject.
The question is not why metals corrode. Almost all of them…
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…