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Due to the advantages of high efficiency, light mass and small volume, the flywheel based on brushless DC (BLDC) motor with ironless stator is widely utilized in the attitude control system of the micro-satellite.
This paper reviews solar flows and magnetic fields observed at the photospheric level. We first present the context in which these observations are performed. We describe the various temporal and spatial scales involved, and the coupling between them. Then we present small-scale flows, mainly supergranulation and flows around active regions. Flows at the global scale are then reviewed, again with...
Electric field control of the ferromagnetic magnetization process has become increasingly important because its great potential applications for thememory device, magnetic logic, magneto-electric sensor and the integration of magnetic functionalities into electronic circuits [1,2]. Since the magneto crystalline anisotropy is originated from the spin-orbital coupling of the materials, modification...
The precise measurement of Planck Constant h to establish a kind of quantum mass standard is an important but very difficult work. The Joule Balance method, for the same purpose but different from Watt Balance method, is going on in NIM for three years. The principle and progress are described.
This paper reviews solar flows and magnetic fields observed at the photospheric level. We first present the context in which these observations are performed. We describe the various temporal and spatial scales involved, and the coupling between them. Then we present small-scale flows, mainly supergranulation and flows around active regions. Flows at the global scale are then reviewed, again with...
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