Tìm thấy một chiếc bát cầu nguyện cũ

Tìm thấy một chiếc bát cầu nguyện cũ

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One thought on “Tìm thấy một chiếc bát cầu nguyện cũ

  1. Saigonauticon says:

    Through an unlikely and accidental series of events, I own an old prayer bowl. It’s cast bronze — there’s a seam down the middle on the inside where the two halves where attached (and the grain you see is from the casting sand I think). I don’t really know how old it is, probably not old enough to be in a museum (although if I’m wrong, please correct me and I’ll sort it out). I don’t think it predates machine tools because of the lines on the exterior finish and the generally good condition — probably it’s well under 100 years old.

    Anyway, the neat thing about these is they ring in a very distinct way when you tap them. So I recorded it and passed it through an FFT and saw that it rings at very precisely and reliably 805Hz, 2350Hz, and 4375Hz.

    Not sure what to do with it, although I suppose I could make a lockbox that only opens when this specific bell is rung, due to the precise harmonics. Or I might give it away to someone who has a more traditional use for it. Anyway, I thought it was interesting enough to share!

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