Category: GravityNotes

Note in Houston Astronomical Society about Gravitational Engineering

https://www.facebook.com/groups/AstronomyHouston I have been looking at all the radio astronomy groups on the Internet. There are a lot of them, at all levels of age and experience and size. I am trying to see how many of the ground and orbiting networks are also picking up signals in the nanoHertz to GHz range. That includes
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NANOGrav raw observing data – merging all global sensor networks on the Internet

Hello, I was visiting https://data.nanograv.org/ to see what kind of data you are sharing online.  I am tracking most all the sensor networks on the Internet, especially the emerging ones. If I understand this talk by Steve Taylor at https://www.youtube.com/watch?v=_UptA7pkARo you are only observing at widely separated times for about 30 minutes? He talks about
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Is anyone doing continuous quantum measurements? Are you picking up gravity, seismic, magnetic, ELF and other noise?

As the quantum detectors get more sensitivity they should be picking up fluctuations in the local gravitational potential and electromagnetic background fields of the earth. But I have not seen anyone running a detector continuously for the days or weeks or months needed to do the required correlations to trace things out. Nor, do I
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Another try to explain why gravimeter magnetometer arrays are important

Andy, Thanks.  I have searched the Internet almost every day for the last 23 years, and have learned never to think something doesn’t exist.   Thanks for confirming that there are likely no permanent magnetometer arrays.  There could still be someone who does it for fun, and doesn’t tell anyone. I wrote some notes below about
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Another comment on Schrodinger and noise in the vacuum

L.D. Edmonds I did not mean to stir things up. I track global sensor networks (the communities of people working together) and many of the “quantum” and “gravitational” and “quark gluon” and “neutrino” groups get rather esoteric in their language and methods. The methods are not too hard, but sorting out what people mean by
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Broken Links on virgo-gw.eu and lack of Internet strategy for gravitation

Hello, I was at https://www.virgo-gw.eu/#about and clicked on “Click here for more information on the Virgo experiment and its science.” to find that the link is broken.  “page not found” “There is no offer for the moment, stay tuned” I am looking at the O3a data at https://www.gw-openscience.org/archive/links/O3a_16KHZ_R1/V1/1238166018/1253977218/simple/ I can download it and read it
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Comment on CTBTO web pages – Infrasound and Gravity

CTBTO Webmaster, VDEC contact: I did a screen clip of the page at ctbto.org/specials/vdec/  You can see that it is overlaying text over text.  I highlighted the overlay and could sort of read it.  I found the “here” to find the VDEC application form.  I changed the magnification of the page but that just makes
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Comment on Houston Astronomical Society Star Parties – Elon Musk All Sky Cameras

Steve and Amelia Goldberg, If Houston Astronomical Society (HAS) would share recordings online, then star parties can be continuous and world wide. Soon, in human terms, there will be people observing from the far side of the moon and from Mars. So I hope Houston Astronomical Society will be a world leader in online community
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Archiving and Sharing lossless sky data for all the people on earth

Dominic, I spoke to Chuck Allen, vice president of the Astronomical League, yesterday — https://www.astroleague.org/al/general/contact.html “The Astronomical League is composed of over two hundred and forty (280 now) local amateur astronomical societies from all across the United States.” https://en.wikipedia.org/wiki/Astronomical_League (pretty thin description) https://en.wikipedia.org/wiki/List_of_astronomical_societies We talked almost an hour about the growth of Internet sharing (I
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Comment on: Trabecular bone organoids, synthesizing earth-like gravity equivalents

Trabecular bone organoids – A micron scale prototype designed to study the effects of microgravity and degeneration – https://www.nature.com/articles/s41526-021-00146-8 Alexandra, I received this note today about your work.  I have been tracking most all the levitation technologies on the Internet for some time. Then I realized that you probably know all this already, except maybe acoustic
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