DISLOCATIONS in alkali halide crystals doped with silver ions can be ‘decorated’ by a hydrogen treatment, which causes reduction and subsequent precipitation of silver 1. In the course of work on the ...

In every bit of nothing, there is something. If you zoom in on empty space and take out all the planets and stars and galaxies, you might expect a pure vacuum, but you’d be wrong. In­stead you would ...

Introduction Did you know that flour can explode? Luckily, this does not happen spontaneously on your kitchen counter, but only if the conditions are right. You need a very fine powder of flour to ...