[time-nuts] z3801a anomaly

Poul-Henning Kamp phk at phk.freebsd.dk
Wed Jun 14 02:10:18 EDT 2006

In message <01c901c68f78$10fb4cf0$8601000a at fakie>, "Christopher Hoover" writes:

>as you can see the efc took a huge dive and then corrected itself.

Sometimes quartz crystals do step changes in resonance frequency
as a result of mechanical events in the crystal.

For instance high enerby cosmic rays can cause a dislocation in the
crystal lattice.

For new crystals pollution left over from manufacturing will also
be a cause.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at 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.

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