Back Scatter It refers to the portion of the radar beam energy that returns back towards the radar after striking a target.
Energy back scattered from a target (precipitation, clouds, etc.) and received by and displayed on a radar screen.
Echo Tops ...
When it strikes the target, a portion of the pulse will be back scattered towards the radar. If the target it strikes is well beyond the normal range of the radar, it will take longer for the back scattered energy to arrive back at the radar.
In radar terms, it is the minimal amount of back scattered energy that is required to produce a target on the radar screen. In other words, MDS is a measure of the radar's sensitivity.
Back Scatter: A signal that is energy reflected by precipitation or ground clutter.
Ball Lightning: It is a rare ball of electrical charged air redish in color which last for a very short duration.
The value of Z is a function of the amount of radar beam energy that is back scattered by a target and detected as a signal (or echo). Higher values of Z (and dBZ) thus indicate more energy being back scattered by a target.
 See also: Air, Tornado, Water, Atmosphere, Cloud
  
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