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Thread: Sound bubbles

  1. #1
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    Sound bubbles

    Hi everyone,

    Was reading some articles and came across this one about expanding sound bubbles in the heart of our galaxy. For clarification is it sound as we would know it? How fast are they expanding and which way are they expanding to?
    Would this be pet of the vacuum collapse theory? Since they are talking expanding bubbles?

    https://www.google.ca/amp/s/www.scie...way-s-core/amp

  2. #2
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    Quote Originally Posted by Sinbad View Post
    Hi everyone,

    Was reading some articles and came across this one about expanding sound bubbles in the heart of our galaxy. For clarification is it sound as we would know it? How fast are they expanding and which way are they expanding to?
    Would this be pet of the vacuum collapse theory? Since they are talking expanding bubbles?

    https://www.google.ca/amp/s/www.scie...way-s-core/amp
    There is no mention of sound bubbles. Only radio.

  3. #3
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    Is radio not the same as sound.

  4. #4
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    Quote Originally Posted by Sinbad View Post
    Is radio not the same as sound.
    No.

    Radio is an electromagnetic wave and can travel through vacuum. Sound is a physical wave (something is actually moving and vibrating) and travels through a media. We are most familiar with that media being air, but it can be water or even solids.
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  5. #5
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    Quote Originally Posted by Sinbad View Post
    Is radio not the same as sound.
    No. Sound is a vibration within a material medium (e.g. gas, liquid, solid) that propagates as a wave through the medium. Sound is a mechanical phenomenon. Radio is electromagnetic waves (just as visible light is) in a certain range of wavelengths. Electromagnetic waves are an interaction between electric fields and magnetic fields in which their intensity varies in a regular pattern. Electromagnetic waves are not dependent on a material medium, rather they are impeded by materials.

  6. #6
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    In the case of radio waves then. How fast are they expanding and which way are they expanding to?
    Would this be part of the vacuum collapse theory? Since they are talking expanding bubbles?

  7. #7
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    The bubbles responsible for the radio waves seem to be expanding at less than a thousandth of the speed of light, above and below the galactic plane (ie, not towards us).
    This has nothing to do with vacuum collapse. It's an expanding shock wave in the interstellar gas, from some energetic event in the centre of the galaxy millions of years ago.

    Grant Hutchison

  8. #8
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    Since sound waves were mentioned, though the story is radio waves, it's interesting that they do exist in space. I recall (and found) the story about a Bb note 57 octaves below normal in the Perseus Cluster.
    We know time flies, we just can't see its wings.

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