HF radios often use toroidal transformers and winding them is a rite of passage for many RF hackers. [David Casler, KE0OG] received a question about how they work and answered it in a recent video ...

Mathematicians call the shape of a doughnut a 'toroid'. Physicists call a swirling fluid a 'vortex'. A toroidal vortex, then, is a swirling doughnut of fluid. This video from the Sleek Geeks archive ...

These strangely-shaped twisted-toroid propellers look like a revolutionary (sorry) advance for the aviation and marine sectors. Radically quieter than traditional propellers in both air and water, ...

This paper by TSAW Drones discusses the need for less noise in UAVs, how these toroidals can benefit the drone industry, how these propellers came to be and how exactly they reduce the noise. Also, in ...

14.10 x 14.22 x 8.76 to 16.76 x 17.53 x 9.91 mm. (From $1 ea/large qty–available now.) ...

When comparing the efficiency of different wind turbine blade designs, [AdamEnt] found using a hair dryer wasn’t the best tool for the job. Enter his new 3D-printed wind tunnel. After several ...

A delivery ceremony has been held for the toroidal field magnet coil box - measuring 21 metres by 12 metres - at the Comprehensive Research Facility for Fusion Technology in Hefei, China. (Image: ...

Imagine two toroidal permanent magnets arranged such that one is floating above the other for year after year. Where is the energy that powers this effect coming from? A couple of months ago, I penned ...

Scientists have clarified that toroidal magnets can also look for axions, one of the particle candidates for the mysterious dark matter. IBS scientists clarify that toroidal magnets can also look for ...