Toggle search
Search
Toggle menu
notifications
Toggle personal menu
Template
:
Experiment
Template page
Views
Read
View source
View history
associated-pages
Template
Discussion
More actions
Sine wave in water _ exciter, amp
20Hz - 400Hz :
20Hz - 200Hz (Slow) :
20Hz- 300Hz (Close):
Bell of King Seongdeok (Emile Jong) :