| 摘要 |
PROBLEM TO BE SOLVED: To provide a gong for a striking work or alarm of a watch. SOLUTION: The gong is configured to produce a sound within an audible frequency range when it is struck by at least one hammer. This gong is made of a material, wherein a square root of a ratio of elasticity modulus of the material divided by a volume mass of the material is less than 3300 m/s, so as to allow the gong to produce a rich sound, comprising a large number of partials, within the audible frequency range. The selected material may be, for example, material having an amorphous structure such as metallic glass. COPYRIGHT: (C)2010,JPO&INPIT
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