A LEADING feature of present-day methods of navigation is the use of tables. There is scarcely any method in use in navigation for which one, and probably many, tables, of more or less practical ...
THE remarkable paper on Stonehenge, by Sir N. Lockyer and Mr. Penrose, in NATURE of November 21 has greatly interested me. Just two years ago, I was working at the subject, and wrote to Prof. Petrie ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Although satellite dishes are used extensively, steerable dishes can be frustratingly difficult ...
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