Intensity like signal strength will generally fall off with distance from the source, although it also depends on the local conditions and the pathway from the source to the point.
-- Charles Francis Richter
   
Charles Francis Richter   Name:
Charles Francis Richter
Type:
Scientist
Nationality:
American
Birth:
April 26, 1900
Death:
April 20, 1985
https://www.nutquote.com/quote/Charles_Francis_Richter