-------- ew via time-nuts writes: > In 1973 I moved for TI to Dallas and had a 20 foot hole drilled to place my > Sulzer One alternate.. Today I monitor my lab closely to better understand > what to do. The monitor is placed on the top of the HP5065A[...]
When we built our new house I wanted to build some kind of "clock vault", but however I looked at it, it was either far too expensive or impossible to get planning permission for due to the ground water protection zoning. I later talked to a geologist who knows the Danish underground well, and he estimated I would have needed to drill to at least 25m depth to escape seasonal temperature-changes and cited a research paper from the 1950'ies where the did precisely that experiment. He also mentioned something I had not thought about my self: The ΓΈ=15cm end-capped dry steel-pipe I was dreaming of would have been subject to a LOT of upward boyancy force. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
