{"id":385,"date":"2011-09-25T13:24:39","date_gmt":"2011-09-25T13:24:39","guid":{"rendered":"http:\/\/tofi.me\/?p=385"},"modified":"2012-05-17T22:50:25","modified_gmt":"2012-05-17T22:50:25","slug":"network-cabling-the-continents","status":"publish","type":"post","link":"https:\/\/tofi.me\/?p=385","title":{"rendered":"Network Cabling the continents"},"content":{"rendered":"

Althoug I have known how the world is cabled together and that there are huge pipes on which we transfer tons of data, I didn’t know the extent of it and how long those have been in existence. So when I read this article I was totally blow away by the fact that the first cables were put down in the 1860’s and by early 1900’s most of the continents were cabled up by the British empire. Totally amazing.<\/p>\n

\"\"<\/a> cross section<\/a> of a submarine communications cable.
\n1 – Polyethylene<\/a>
\n2 – Mylar<\/a> tape
\n3 – Stranded steel<\/a> wires
\n4 – Aluminium<\/a> water barrier
\n5 – Polycarbonate<\/a>
\n6 – Copper<\/a> or aluminium tube
\n7 – Petroleum jelly<\/a>
\n8 – Optical fibers<\/a><\/p>\n

As far as laying a submarine cable, specialized cable-laying ships must be used \u2014 and again, when a cable is broken (usually by a trawler, but sometimes a whale!), another special ship must be used. This generally means that laying a cable is logistically challenging and very expensive \u2014 and when a cable breaks, it sometimes isn\u2019t possible to fix it immediately if a cable-fixing ship isn\u2019t nearby (and for this reason, most submarine cables use a ring topology in case one stretch is broken).<\/p>\n

Further reading:<\/p>\n

    \n
  1. Secret World of Submarine Cables<\/a><\/li>\n
  2. Wikipedia: Submarine communications cable<\/a><\/li>\n<\/ol>\n


    \n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Althoug I have known how the world is cabled together and that there are huge pipes on which we transfer tons of data, I didn’t know the extent of it and how long those have been in existence. So when I read this article I was totally blow away by the fact that the first […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[32,47,66,74,78],"_links":{"self":[{"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/posts\/385"}],"collection":[{"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tofi.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=385"}],"version-history":[{"count":3,"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions"}],"predecessor-version":[{"id":513,"href":"https:\/\/tofi.me\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions\/513"}],"wp:attachment":[{"href":"https:\/\/tofi.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tofi.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tofi.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}