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  1. Dictionary
    magnetism
    /ˈmaɡnɪtɪz(ə)m/

    noun

    • 1. a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.
    • 2. the ability to attract and charm people: "his personal magnetism attracted men to the brotherhood"

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  2. en.wikipedia.org › wiki › Carbon_nanotubeCarbon nanotube - Wikipedia

    1 day ago · It is also conventional to define an armchair path as one that makes two left turns of 60 degrees followed by two right turns every four steps. On some carbon nanotubes, there is a closed zigzag path that goes around the tube. One says that the tube is of the zigzag type or configuration, or simply is a zigzag nanotube.

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  4. en.wikipedia.org › wiki › Radioactive_decayRadioactive decay - Wikipedia

    1 day ago · Nuclear physics. Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma ...