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.
Laser Eye Surgery Explanation-How it Works. Prior to the LASIK procedure, numbing eye drops are used to alleviate any discomfort to the eye & requires only topical anesthetic drops, and no stitches are required to heal. Your eye will be positioned under the excimer laser (cool ultraviolet beam of light).