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2. Lidar - Wikipedia

   en.wikipedia.org/wiki/Lidar

   Lidar (/ ˈ l aɪ d ɑːr /, also LIDAR, LiDAR or LADAR, an acronym of "light detection and ranging" [1] or "laser imaging, detection, and ranging" [2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.

3. Graticule (cartography) - Wikipedia

   en.wikipedia.org/wiki/Graticule_(cartography)

   Map of Europe with a 30° graticule in dark gray. A graticule (from Latin crāticula 'grill/grating'), on a map, is a graphical depiction of a coordinate system as a grid of lines, each line representing a constant coordinate value. [1] It is thus a form of isoline, and is commonly found on maps of many kinds, at scales from local to global.

4. Topographic prominence - Wikipedia

   en.wikipedia.org/wiki/Topographic_prominence

   Since topographic maps typically show elevation using contour lines, the exact elevation is typically bounded by an upper and lower contour, and not specified exactly. Prominence calculations may use the high contour (giving in a pessimistic estimate [ 10 ] [ 11 ] ), the low contour (giving an optimistic estimate), their mean (giving a ...

5. Frederick and Pennsylvania Line Railroad Company - Wikipedia

   en.wikipedia.org/wiki/Frederick_and_Pennsylvania...

   The Frederick and Pennsylvania Line railroad ran from Frederick, Maryland to the Pennsylvania-Maryland State line, or Mason–Dixon line near Kingsdale, Pennsylvania consisting of 28 miles (45.1 km) of center-line track and 29.93 miles (48.17 km) of total track including sidings. Chartered in 1867, the railroad started construction in 1869 and ...

6. Wikipedia : WikiProject Maps/Conventions/Disputed areas

   en.wikipedia.org/wiki/Wikipedia:WikiProject_Maps/...

   Following a talk, a consensus encouraged to rather use doted lines for borders such —–—–— or ––– (ex: Portugal_administrative_map-fr.svg), the rational being that borders are not walls, people always crossed them, and as an NGO and international community of volunteers, we have not to support such national view that space stop ...

7. File:Topographic map of Ukraine (with borders and towns).svg

   en.wikipedia.org/wiki/File:Topographic_map_of...

   You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.