Neutronotropy and reality
Neutronotropy, promoted by H.-D. Langer
as a new field of science since 1998
[1,2,4], can easily be judged
by considering the ideas or assumptions expressed in the following
quotations (translated from German):
(1) "Guided neutron waves in a wave guide made up of two
parallel cracks" [1,2],
"Multitude of planar and partial beams representing the
microstructure of the neutron field of the natural terrestric
nuclear radiation ,
"During sleep, neutron irradiation can damage one's repair
system so that illness and decay can progress." ,
(4) "Groundwater prospection with the divining rod is highly
efficient ..." .
ad (1): Parallel cracks in rock do not act as reflecting walls for
neutrons, hence do not form "wave guides", as easily explained in .
ad (2): Langer
assumes a stationary "microstructure of the neutron field". Such
microstructure follows neither from
the view of classical mechanics of colliding particles nor from the
view of quantum mechanics of interfering probability waves.
Every emitted neutron has got its probability
distribution, which quantifies the probability of finding this neutron
at some place. Since every emitted neutron has got another starting
point and takes another path, the probability
distributions of the neutrons
are different. Hence, a "coherence of neutrons", which is an essential
concept in Langer's
argumentation, does not exist. Hence there is no reason to assume
that the independently emitted neutrons could arrange themselves in a
"multitude of planar and partial beams" 
with biological effects.
ad (3): According to Langer,
trees are particularly affected
since they have to stay also at places of higher irradiation intensity.
Allegedly the trees suffer under permanent exposition , hence people staying in bed should be warned against
prolonged neutron irradiation lest illness and decay
be progressing. So it appears that (3) makes a suitable advertisement
offering earth ray measurements in sleeping rooms.
ad (4): The noncritical attitude with respect to
the alleged successes of
divining and the repeated mentioning of power places  indicate
esoteric ideas nurtured by the author. As expected,
tests have proven the divining rod completely unsuitable for
prospecting resources of any kind, including water .
The above annotations to repeatedly published notions are to
confirm the view that neutronotropy
is a transpicuous mental construct far away from reality.
Das geophysikalische Standortproblem der Solitärbäume.
Teil 2: Neutronotropie. Veröff. Mus. Naturkunde Chemnitz 21 (1998),
 H.-D. Langer:
Standortproblem der Solitärbäume.
Teil 3: Ein Testbaum
Mus. Naturkunde Chemnitz 26 (2003), S.117-122.
 H.-J. Weiss:
No fear of earth rays ! Google: Pseudo science Chemnitz (2009).
 H.-D. Langer:
Das Elend der Bäume (2019), 468 S.
 G. Urban:
Es sind der Rutengänger viele ... . Veröff. Mus. Naturkunde
Chemnitz 21 (1998), S.63-68.
 Wünschelrute - Wikipedia (German version)