Baseball digest is but one of several publications on the sport of baseball. true or false?

Baseball Digest is one of the publications on the sport of baseball is a True statement.

Explanation:

The baseball digest is the publication in regard to the baseball sport. It is published by the Grand Stand Publishing LLC in the city of Gurnee, state of Illinois, in United States. It was first published in the year of 1942 in August.  

It is being published in every 2 months in a year thereby, a total of 6 publications in a year. There are other publications as well for baseball namely, Baseball America, Baseball Hobby News, Baseball Register.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia