Latitude exact relationship of parallels and meridians with horizontal and vertical: both are complicated curves. On the sphere the normal passes through the centre and the latitude () is therefore equal to the angle subtended at the centre by the meridian arc from the equator to the point concerned. If the meridian distance is denoted by then where denotes the mean radius of the Earth. is equal to . No higher accuracy is appropriate for since higher-precision results necessitate an ellipsoid model. With this value for the meridian length of 1 degree of latitude on the sphere is (60.0 nautical miles).
The Longest Voyage it is "nearly unmatched" in science fiction for its "lyricism, compassion, subtlety, thoughtfulness, and above all the relish it takes in the bristling strangeness and wonder of the world". Steven H. Silver commented that what distinguishes "The Longest Voyage" from similar stories is that "Anderson provides strong motivation for both the explorers and the natives". The Longest Voyage "The Longest Voyage" is a science fiction short story by American writer Poul Anderson. It won the Hugo Award for Best Short Story in 1961. On a distant world the age of exploration is beginning. A party of daring explorers attempts to