On Mon, 9 Feb 2026 01:28:11 +0100, Thomas 'PointedEars' LahnGravitational wave detectors are kilometer-sized contraptions. Some
<PointedEars@web.de> wrote:
[Your follow-up was posted to <news:sci.astro> instead (twice now). I hadA sharp gravitational wave will produce a sound, in a microphone or in
set Followup-To to that group, but forgot to announce that in the message body.
>
Due to your address munging -- which is a violation of network standards [1]
and Netiquette [2] -- I could not inform you about that via e-mail.
>
[1] <https://www.rfc-editor.org/rfc/rfc5536#section-3.1.2>
<https://www.rfc-editor.org/rfc/rfc5322#section-3.6.2>
[2] <https://en.wikipedia.org/wiki/Etiquette_in_technology>
>
]
>
john larkin wrote in <news:sci.astro>:On Sat, 7 Feb 2026 22:39:34 +0100, Thomas 'PointedEars' Lahn>
<PointedEars@web.de> wrote:3. By contrast to light, gravitational waves are quadrupole waves that are>
only emitted when the spacetime curvature changes in a non-spherically
symmetric way. They are also emitted by objects and systems which do not
emit light.
Suppose that somewhere out in free space a cannonball somehow
appeared. Wouldn't that create a symmetric, spherical gravitational
wave?
See <mid:10m8fo7$9gf8$2@gwaiyur.mb-net.net> (in <news:sci.astro>).
>Microphones some distance away, in any direction, would hear a click>
some time later.
Gravitational waves do not produce a sound, although they can be made
audible by computer, i.e. the oscillations can be converted to sound: For
example, you can hear a characteristic chirp when two celestial objects
merge because the frequency and amplitude of the produced gravitational
waves increases as the objects are spiraling in:
>
<https://ligo.org/gravitational-wave-science/>
>
F'up2 <news:sci.astro> again.
an ear.
I guess you can argue that microphones don't literally hear things.
Yup, you could do that.
John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics
additional engineering is needed to make them more compact.
Jeroen Belleman
Les messages affichés proviennent d'usenet.