Storie di mappe
Esplora superfici, proiezioni e dati dei confini e verifica sulla mappa.
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Perché la Groenlandia sembra così grande?
Le mappe di Mercatore dilatano le regioni vicine ai poli. La Groenlandia sembra quindi troppo grande rispetto ai paesi dell’equatore. Confrontala con l’Australia su Equal Earth. Una mappa utile alla navigazione non è necessariamente adatta al confronto delle superfici.
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Cosa conserva Equal Earth
Appiattire una sfera cambia alcune proprietà. Equal Earth conserva le aree relative, ma non tutte le forme, distanze e direzioni. Al bordo del globo le forme si comprimono. Scegli la vista secondo la tua domanda.
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Perché confini e aree differiscono
La semplificazione omette piccole baie e isole. Usiamo confini Natural Earth in scala 1:110 milioni e calcoliamo l’area da forme sferiche semplificate. I dati ufficiali possono includere acque e territori in modo diverso. ≈ indica una stima.
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Africa is bigger than the map in your memory
The equator crosses Africa, but familiar rectangular maps give northern regions extra space. Compare Africa with countries you know to get a sense of its size.
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Russia and Africa: width is not area
Russia stretches across the top of many world maps. Compare that visual width with area, and learn why a country and a continent need different labels.
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Japan and Germany: a long shape can hide a similar area
An island chain and a compact mainland country look very different. Compare area without confusing the sea between islands with land.
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Why online maps stop before the poles
Square tiles make a world map easy to zoom, but Mercator cannot place the poles at a finite height. Learn what the missing polar strip means.
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Why a country looks smaller at the globe’s edge
A globe avoids the familiar rectangular world, but its screen image still compresses the edge. Separate spherical area from visible footprint.
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Why the shortest flight looks curved on a map
A straight line on the screen need not be the shortest path around Earth. Compare great-circle paths with compass bearings, and see what a route illustration can tell you.
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The map edge is not the International Date Line
Longitude wraps around, a flat map has a seam, and calendar dates have a boundary. These three ideas are related but not identical.
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Antarctica is a continent, not the bottom border
A stretched southern strip can hide the shape of a whole continent. Compare Antarctica on Mercator, Equal Earth and a polar globe view.
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Pangaea was not there at the start of every timeline
At 600 million years ago, Pangaea had not yet assembled. Follow separated landmasses as they come together and later drift apart.
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Five questions before sharing a “true world map”
Projection, zoom, viewpoint, source detail and the meaning of area all affect how you read a map. Check these before sharing a comparison screenshot.
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