Secondo

Secondo

Selffish

The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom. But is it always so instant? How long is o…

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  • wootabi

    wootabi

    · 7y

    ohh

  • SIA (SiHyun Uhm)

    Really Really Awesome track!! So honored to connect with you…

  • nuav

    nuav

    · 8y

    😵 I LOVE THIS!!! 😩💦💦

  • @koreycreative

    What type of piano is this?

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