wind rose

Would they recognize familiar territory among its rhumb lines and wind roses?

Wind roses are tools used to determine the direction of the prevailing wind.

Ancient wind roses typically had twelve winds and thus twelve points of orientation, sometimes reduced to eight or increased to twenty-four.

The British used punched cards successfully in about 1920 to extract wind data from ships' logs and to produce wind roses for ocean regions.

The Etruscans, he says, were responsible for the appearance in the Renaissance of the diagrams known as wind roses, used in compasses to this day.

Early forms of the compass rose were known as wind roses, since no differentiation was made between a directional point and the wind which emanated from that direction.

A particular feature of the Goos maps was that they were embellished with "large descriptive cartouches" supplemented with sketches of ships, compass cards, and wind roses.

Historically, wind roses were predecessors of the compass rose (found on maps), as there was no differentiation between a cardinal direction and the wind which blew from such a direction.

The first part comprises an introduction to geography with engravings of globes, wind roses, and cosmographic systems through the ages from Ptolemy, Copernicus and Tycho Brahe to Descartes.

Users can view data time series, frequency distributions, and wind roses, flag and filter erroneous data, and calculate wind shear, turbulence intensity, wind turbine power output, and 50-yr extreme gust.

The bronze disk on top of the milestone is "an adaptation from ancient portolan charts of the so-called wind roses or compass roses from the points of which extended radial lines to all parts of the then known world-the prototype of the modern mariner's compass."

The two properties, conformality and straight rhumb lines, make this projection uniquely suited to marine navigation: courses and bearings are measured using wind roses or protractors, and the corresponding directions are easily transferred from point to point, on the map, with the help of a parallel ruler or a pair of navigational protractor triangles.