Eyewitnesses Photographs
Sound evidence
Sound evidence
Sound
evidence is considered being the most important class of evidence without much doubt. The sonar and the echo sounder were developed
during World War II. They were used mainly to
detect enemy submarines. As sonar relies on
the reflection of transmitted sound waves by underwater targets, it is considerably
effective to detect objects under water, especially in the murky one of the Loch ness. It was in the 1960's, while it had started being
used for fishing that the sonar had been introduced in the Loch ness investigations.
Surpassing greatly the other types of evidences in advantages, sonar has also
proved to be the most successful. Many
well-equipped teams had got positive contacts with it.
At least, results obtained are reasonable and measurable. However, sonar does present one problem. This system requires some considerable degree of
expertise to verity the results obtained and zoologists rarely have this expertise.
The sonar and echo sounder are used nowadays to locate shoals of fish, changes in
temperature and rising gases. There are
possible chances that people trying to locate the Loch ness monster b sonar may get in
contact with these things instead. On the
positive hand, we can judge if the contact is animate or not by following it movements
under water. Thus, we may receive some hints
to its identity.
Teams from the Oxford and Cambridge Birmingham University, the Loch Ness
Investigation Bureau, the Academy of Applied Sciences, Klein Associates, Vickers Oceanics
and the Partech Company have all, so far, produced results demonstrating the presence of
an animate contact whose size is larger than a salmon, displaying movements and diving
rates unlike those expected of fish. These
teams are trained and sometimes expertised, so
many people prefer not to contradict their sayings.