Rhomb

(n.) An equilateral parallelogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square.

(n.) A rhombohedron.

沙琳编辑

• Thus, if the two extreme needles were deflected inwards, one towards the left and the other towards the right, they would point to the letter _A_ at the top of the rhomb. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• The rhomb was divided into thirty-six equal parts by ten cross lines, and the needles were placed at the points where the lines intersected, as shown in the diagram. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• It consisted of five magnetic needles, ranged side by side on a horizontal line that formed the diameter of a rhomb. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• At each intersection, and along the boundary lines of the rhomb, letters were marked, any one of which might be pointed at by the combined action of two of the needles. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.

比利编辑