1 Replacing locks: With the ease of using a Phillips screwdriver, you can replace your old locks in just 10 minutes each. 2  New locks: Adding locks to new doors is simple for the average do-it-yourselfer. 3  You will need to drill holes in your door for the locks and backset latches before you install the locks. New locks: Adding locks to new doors is simple for the average do-it-yourselfer. 2  You will need to drill holes in your door for the locks and backset latches before you install the locks. 3  The entire process should take the average person 30 minutes.
Laser lithotripsy. Laser lithotripsy is a surgical procedure to remove stones from urinary tract, i.e., kidney, ureter, bladder, or urethra.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term laser originated as an acronym for light amplification by stimulated emission of radiation. The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light coherently, spatia