G*******n
发帖数: 6889 | 1 http://www.latimes.com/nation/la-na-celestial-navigation-201510
“Officials reinstated brief lessons in celestial navigation this year,
nearly two decades after the full class was determined outdated and cut from
the curriculum. That decision, in the late 1990s, made national news and
caused a stir among the old guard of navigators.
Maritime nostalgia, however, isn't behind the return.
Rather, it's the escalating threat of cyberattacks that has led the Navy to
dust off its tools to measure the angles of stars.
After all, you can't hack a sextant.” |
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