Engineering
Permanent magnet synchronous motor (PMSM) systems have been widely used due to their high power density and high efficiency. Digital control systems have been applied to improve the performance of PMSM systems. Proportional ...
Oct 10, 2022
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Hi Tech & Innovation
Are you lying? Do you have a racial bias? Is your moral compass intact?To find out what you think or feel, we usually have to take your word for it. But questionnaires and other explicit measures to reveal what's on your ...
Feb 9, 2017
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Hi Tech & Innovation
Across Europe and parts of Asia, travellers can enjoy some of the fastest rail services in the world. From Málaga to Madrid, Tokyo to Osaka, high-speed electric trains condense the travel times between major hubs by racing ...
Jan 11, 2017
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Energy & Green Tech
In the realm of clean energy, metal halide perovskite solar cells (PSCs) have emerged as a focus, capturing significant attention for their extraordinary advancements. In just over a decade, their certified power conversion ...
Jan 26, 2024
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Energy & Green Tech
There's some irony in the fact that devices that seem indispensable to modern life—mobile phones, personal computers, and anything battery-powered—depend entirely on minerals extracted from mining, one of the most ancient ...
Apr 23, 2024
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Business
China said on Thursday that it would halt the export of a range of rare earth metal processing technologies, potentially hindering other countries in a crucial sector dominated by Beijing.
Dec 21, 2023
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Engineering
In a new study that one scientist called jaw-dropping, a joint UCLA/Caltech team has shown that it is possible to obtain the structures of small molecules, such as certain hormones and medications, in as little as 30 minutes. ...
Nov 12, 2018
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Automotive
The venture capital arms of General Motors and Stellantis are among investors sinking $33 million into a Minnesota company with technology to make magnets for electric vehicle motors without using expensive rare-earth metals.
Nov 8, 2023
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Engineering
Computers, cell phones, and other electronic devices require active cooling to prevent overheating. Typically, devices in the entertainment industry and power electronics are cooled by directing an airflow to specific areas. ...
Jun 25, 2024
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In physics, magnetism is one of the forces in which materials and moving charged particles exert attractive, repulsive force or moments on other materials or charged particles. Some well-known materials that exhibit easily detectable magnetic properties (called magnets) are nickel, iron, cobalt, gadolinium and their alloys; however, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. They include copper, aluminium, water, and gases.
Magnetism also has other definitions and descriptions in physics, particularly as one of the two components of electromagnetic waves such as light.
This text uses material from Wikipedia, licensed under CC BY-SA
