Dyson worked out how to make a teeny tiny motor, and now it just can't stop miniaturizing its appliances

Dyson just announced the PencilWash, a motorized wet floor cleaner that's roughly the same size as a regular, manual mop. This isn't the first time Dyson has shrunk down a traditionally bulky appliance: the PencilWash is a sister product to the Dyson PencilVac FluffyCones, an almost impossibly compact cordless vacuum.

The downsizing trend began life in a less immediately eye-catching way, in Dyson's haircare department. The brand had already shaken up the haircare market with its original Supersonic hair dryer, but for its professional-only Supersonic r it redesigned its inner workings to be far more streamlined and 'power-dense'.

That meant all the mechanics could be fitted into a tubular design that looks odd, but turned out to be excellent for extended, meticulous hair styling. Dyson recognized that it was onto a good thing, and in March last year ...