Townsend, Middlesex County, Massachusetts, United States road map, satellite view, street view, terrain map, photos... Townsend, MA is situated at 42.67Â° North latitude, 71.71Â° West longitude and 91 meters elevation above the sea level.
Time of Flight. The simplest way to think about âtime of flightâ laser scanning is to look approach it as nothing more than a laser range finder. I think we all understand how a laser range finder works. It basically measures a distance by shooting a laser beam out to an object and measuring how long it takes that laser beam to bounce back.
1 LASIK. 2  In a LASIK operation, a flap in the cornea is created, and the laser vision correction takes place deep within the cornea, rather than on the surface. 3  LASIK is a more advanced form of laser eye surgery that can treat a broader range of vision imperfections, and offers many other benefits as well.