Longitudes are, therefore, imaginary circles that intersect the North and South Poles and the equator. Half of a longitudinal circle is known as ameridian. Meridians are perpendicular to every latitude. Unlike, latitudes, there is no obvious central longitude. However, in order to measure the po...
What is the longitude of the Arctic Circle?Arctic Circle:The Arctic Circle is a line of latitude that encircles the northern hemisphere at 66.5 degrees north latitude. It exists because the earth is tilted on its axis at about 23.5 degrees, so 66.5 degrees (90 - 23.5) is significant when ...
What is a quadrangle on a topographic map?Topographic Map:A topographic map is a detailed record of a specific area of land with details about its geographic position and elevation for the natural and man-made features. It shows the shape of the land by using contour lines or lines of equa...
"The length of daylight can tell us the latitude(纬度), while the time of solar noon can tell us the longitude. So we are able to judge positions of the birds,"Wong says. Researchers compared the routes taken by the birds they followed and the migration timing to other Arctic terns...
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If the Earth is treated as being a perfect sphere, the azimuth {eq}\alpha {/eq} from point 1, at latitude {eq}\phi_1 {/eq} and longitude 0, to point 2, at latitude {eq}\phi_2 {/eq} and longitude {eq}l {/eq}, can be approximated using the following formula: ...
Nowadays, the “Eratosthenes experiment” is run every year on the March equinox, in which schools at the same longitude are paired up to measure the elevation of the Sun at the same point in time, in order to obtain a measurement of the circumference of the Earth. (The equinox is more...
intelligent and driverless tractors.” He pointed to the drone flying over and said, “This is our drone supported by the Beidou navigation system and it’s spraying fertilizer now. All you need is to mark the longitude and latitude of the orchard on your phone, and the drone will take ca...
A.Wonderful. B.So-so. C.Terrible. 14.What is the weather like in the man’s place now? A.Windy and snowy. B.Sunny but windy. C.Cold and wet. 15.What is the weather going to be like in the woman’s place? A.Sunny and warm. ...
Nowadays, the “Eratosthenes experiment” is run every year on the March equinox, in which schools at the same longitude are paired up to measure the elevation of the Sun at the same point in time, in order to obtain a measurement of the circumference of the Earth. (The equinox is more...