Measure of the concentration of an electric field or magnetic field. (Magnetic flux density is measured in gauss, or Webers per unit of tape width, or lines per square centimeter.)
"I wanted to let you know that I received my CDs and am very happy will the sound and the service I received. Back in the late 60's, when I was a young boy, my family used to spend Christmas time in Sun Valley, Idaho where we often past the time listening to the Lettermen, particularly the album "Spring." I had wanted to give my parents the CD ..."