Letter | Published:

A resonant point absorber of ocean-wave power

Naturevolume 256pages478479 (1975) | Download Citation


  • A Corrigendum to this article was published on 16 October 1975


VARIOUS large scale systems have been proposed for absorbing and utilising the energy carried by ocean waves1–4. In principle, such a system consists of a damped oscillator which interacts with the wave. The net result is that energy is transferred from the wave to a load. Here we call a system a ‘point absorber’ when its horizontal extent is much smaller than one wavelength, and a ‘linear absorber’ when the system is made as a straight construction, at least a few wavelengths long1.

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  1. 1

    Salter, S. H., Nature 249, 720–724 (1974).

  2. 2

    Kayser, H., IEEE Ocean, 1, 240–243 (1974).

  3. 3

    Budal, K., and Falnes, J., Mar. Sci. Commun., 1 (in the press).

  4. 4

    Woolley, M., and Platts, J., New Sclent., 66, 241–243 (1975).

  5. 5

    Swift-Hook, D. T., Count, B. M., Glendenning, I., and Salter, S., Nature, 254, 504–506 (1975).

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  1. Institutt for eksperimentalfysikk, N-7034, Trondheim—NTH, Norway

    • K. BUDAR
    •  & J. FALNES


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