When people are thinking of the future of space travel, an idea that floats around is a spaceship with a giant solar sail pushed along by a massive laser. Inspired by the concept but lacking a giant ...

The Ranque-Hilsch vortex tube is an innovative device that utilises compressed gas to separate energy streams into distinct hot and cold outputs. Its operation is based on complex internal flow ...

So you've hooked up a source of compressed air in your shop. It's super useful for blasting away dust and stuff, but wouldn't it also be great if you could control the temperature? If you had easy ...