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Levitation in physics.

E H Brandt

    Science (New York, N.Y.)
    |January 20, 1989
    PubMed
    Summary
    This summary is machine-generated.

    Physical effects enable material levitation using gas jets, sound waves, or lasers. Superconductors and charged particles can also be levitated, with applications in materials processing and transportation.

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    Area of Science:

    • Physics
    • Materials Science

    Background:

    • Free-floating matter can be achieved through various physical phenomena.
    • Levitation techniques offer unique advantages for material handling and scientific investigation.

    Purpose of the Study:

    • To explore diverse physical mechanisms enabling material levitation.
    • To highlight the applications of levitation in science and technology.

    Main Methods:

    • Levitation via gas jets, intense sound waves, and laser beams.
    • Electromagnetic levitation of conductors in radio-frequency fields and charged particles in electric fields.
    • Magnetic levitation utilizing superconductors and flux pinning.

    Main Results:

    • Demonstration of stable and unstable levitation principles.

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  • Successful suspension of solids, liquids, and particles.
  • Exploration of superconductor-based levitation, including flux pinning.

    • Conclusions:

    • Levitation techniques are versatile, employing principles from acoustics, optics, and electromagnetism.
    • Applications span containerless materials processing, frictionless systems, and advanced scientific tools.
    • Superconductors offer unique stable levitation possibilities, crucial for emerging technologies.