Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Focal intensity gain magnitude corresponding to a 20 mm long cylindrical transducer phased array paired with paraboloid or conical reflector geometries and electronic focusing at a depth of 30 mm in water, as a function of the number of elements in the phased array.
