Lifeboat Foundation

A nested conical passive magnetic bearing is presented. The bearing consists of a nested conical rotor inside a conical stator, i.e. two coaxial tilted rings of permanent magnets, both with a rectangular cross section. Varying the cone or tilt angle of the rotor and stator we determine the rotor radius that provides the highest force for three different magnetization cases. For this optimal rotor radius, we show that the bearing with the highest volume normalized force also has the highest stiffness, and furthermore often also the highest varying stiffness with axial displacement. Finally, we show that a conical bearings with a tilt angle of $$60^\circ$$ has an almost constant stiffness and a linearly varying force with axial displacement, making it ideal as a bearing.

Six different planet-forming disks around young stars shine in a new mosaic.

Ultracold calcium monohydroxide created in magneto-optical trap.

This Video Explains Pyruvate oxidation.

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After years of scandals left NSO Group broke and on a U.S. blacklist, L3Harris Technologies expressed interest, and the White House expressed concern.

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Krafton, the company behind the PUBG franchise, has unveiled a virtual human named Ana, which it says will be a big part of its Web3 presence moving forward.

Study shows how a newly identified molecule stimulates the formation of new insulin-producing cells in zebrafish and mammalian tissue, through a novel mechanism for regulating protein synthesis.