To make a jumbo toroidal vortex gun, sacrifice an old plastic garbage bin and cut a round hole out of the bottom. The size of the hole is not critical but about half to a third of the diameter of ...

Propellers are designed to take a fluid, generally air or water, and use a rotating motion to push that fluid through. They're evolutions, in a sense, from the Archimedes' screw, which was likely ...

The obvious solution was to adapt the toroidal shape for a PC fan. He was familiar with the idea from similar screws on boats that are commercially available. You can see his tests in the video below.

Home experiments are not representative. An MIT announcement earlier this year about toroidal propellers winning one of MIT Lincoln Laboratory’s 2022 R&D 100 Awards generated significant ...

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 ...

Toroidal electromagnetic pulses can be generated using a device known as a horn microwave antenna. This electromagnetic “vortex cannon” produces skyrmion topological structures that might be employed ...

The toroidal boat propeller pair installed. (Credit: rctestflight) As boring as propeller designs may seem to the average person, occasionally there’s a bit of a dust-up in the media about a ...

Vector, scalar, and hybrid electromagnetic toroidal vortices. Recently, a major breakthrough in the field of optical toroidal vortices has been achieved and published in Science Advances [11(8 ...

Toroidal inductors are often used in passive filter and equalizer circuits in the 1- to 100-MHz range. For appreciable relative permeabilities and moderate circuit selectivities, stray magnetic ...