Laser based imaging is not only used by law enforcement to see if you are speeding, but when enlarged and mounted to a sensor, can also be used to extract very detailed images of the surface. Light detection and ranging (LIDAR) directs laser light onto the Earth's surface and its returns can be measured down to the centimeter to tell us more about objects on the surface. The LIDAR image above is of downtown Manhattan as you can observe the three-dimensional representation showing height of all objects on the surface.
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