Energy & Green Tech
A research team at the Hefei Institutes of Physical Science of the Chinese Academy of Sciences (CAS), led by Prof. Zhao Bangchuan, has developed a high-performance aqueous zinc-ion battery with ultra-long cycle life in a ...
Jun 14, 2023
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108
Engineering
Theorists at The University of Texas at Dallas, along with colleagues in Germany, have for the first time observed a rare phenomenon called the quantum anomalous Hall effect in a very simple material. Previous experiments ...
Nov 5, 2021
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11
Computer Sciences
Ultrasound imaging techniques have proved to be highly valuable tools for diagnosing a variety of health conditions, including peripheral artery disease (PAD). PAD, one of the most common diseases among the elderly, entails ...
Computer Sciences
A combined team of researchers from the University of Washington and Carnegie Mellon University has developed what they call BrainNet —a system that allows three people to communicate with one another using only brain waves. ...
Engineering
Magnetic random access memories (MRAMs), are among the most promising next-generation memory technologies. Their primary advantages over conventional computer memories and other emerging memory designs include their potential ...
Engineering
Imagine an iPad that's more than just an iPad—with a surface that can morph and deform, allowing you to draw 3D designs, create haiku that jump out from the screen and even hold your partner's hand from an ocean away.
Jul 31, 2023
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100
Electronics & Semiconductors
The propagation of both light and sound waves is reciprocal in nature. In other words, light and acoustic waves travel forward and backward in the same way.
Hardware
A computing device that uses tiny magnetic swirls to process data has been trained to recognize handwritten numbers. Developed by RIKEN researchers, the device shows that miniature magnetic whirlpools could be useful for ...
Feb 9, 2023
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133
Hi Tech & Innovation
Imagine finding your location without GPS. Now apply this to tracking an item in the body. This has been the challenge with tracking "smart" pills—pills equipped with smart sensors–once swallowed. At the USC Viterbi School ...
Jun 14, 2024
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43
Hardware
A team of scientists has taken steps to create a new form of digital data storage, a "Racetrack Memory," which opens the possibility to both bolster computer power and lead to the creation of smaller, faster, and more energy ...
May 5, 2020
1
134
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
