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What (who) is F2 propagation - definition
F2 propagation
IONOSPHERIC PHENOMENON
F2 propagation (F2-skip) is the reflection of FM broadcasting signals off the F2 layer of the ionosphere. The phenomenon is rare compared to other forms of propagation (such as sporadic E propagation, or E-skip) but can reflect signals thousands of miles beyond their intended broadcast area, substantially farther than E-skip.
Northrop M2-F2
LIFTING BODY PROTOTYPE
M2-F2; M2F2
The Northrop M2-F2 was a heavyweight lifting body based on studies at NASA's Ames and Langley research centers and built by the Northrop Corporation in 1966.
cumulative error
EFFECT OF VARIABLES' UNCERTAINTIES (OR ERRORS, MORE SPECIFICALLY RANDOM ERRORS) ON THE UNCERTAINTY OF A FUNCTION BASED ON THEM
Theory of errors; Propagated error; Propogation of error; Propagation of error; Accumulation of errors; Error propagation; Uncertainty propagation; Propagation of uncertainties; Uncertainty propagation software; Cumulative error; Law of propagation of errors; Propagation of errors
¦ noun Statistics an error that increases with the size of the sample revealing it.
