27 July

This technology isn’t well known. It’s not just a fan, it’s a vortex fan. (Thus ‘vor-nado’.) It creates vortices, which then swirl around your room. It’s what they call an ‘air circulator’, for that reason, rather than a fan, which just blasts air in one direction. You can buy it just as a fan, to circulate air in your room in hot or cold weather, or with a heating element included, for heating. Vortices are how air naturally circulates. Vortices are actually the secret to understanding all things, as Archimedes discovered, but that’s a much longer post :)