BE497733A - - Google Patents

Info

Publication number
BE497733A
BE497733A BE497733DA BE497733A BE 497733 A BE497733 A BE 497733A BE 497733D A BE497733D A BE 497733DA BE 497733 A BE497733 A BE 497733A
Authority
BE
Belgium
Prior art keywords
cell
sound
frequency
crystal
cells
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE497733A publication Critical patent/BE497733A/fr

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Optical Recording Or Reproduction (AREA)
BE497733D BE497733A (https=)

Publications (1)

Publication Number Publication Date
BE497733A true BE497733A (https=)

Family

ID=140616

Family Applications (1)

Application Number Title Priority Date Filing Date
BE497733D BE497733A (https=)

Country Status (1)

Country Link
BE (1) BE497733A (https=)

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