Talk about filtering—Winston Bostick, a pioneer of DPF and the person who introduced me to the device, pointed out the existence of vortex filaments in tokamaks 40 years ago. Those are the “cork screw” objects. His observations were dismissed for various reasons but mainly because the scientists involed were filtering their inputs to fit pre-concieved notions. Be intersting to see the technical papers this article is based on.
