"String theory depicts strings of energy that vibrate"
https://www.dummies.com/article/academics-the-arts/science/physics/string-theory-and-vibrations-178718/
"All objects have resonant frequencies at which they naturally oscillate."
https://www.livescience.com/7472-kill-viruses-shake-death.html
"a resonant frequency is a natural frequency of vibration determined by the physical parameters of the vibrating object. This same basic idea of physically determined natural frequencies applies throughout physics in mechanics, electricity and magnetism, and even throughout the realm of modern physics"
http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/reson.html
"Masers operate at the resonance frequency of the hydrogen atom, which is 1,420,405,752 Hz."
https://www.nist.gov/pml/time-and-frequency-division/popular-links/time-frequency-z/time-and-frequency-z-h
"The resonant frequency of helium isotope (He4) at rest state is 2,994,662 Hz, according to the element's atomic diameter at 20°C."
http://www.human-resonance.org/deuterium-helium.html
"Dr. . Champion's phonon resonance formula provides the resonant frequency of gold (Au) in its rest state as 38,931,841 Hz and the 107Ag isotope of silver as 38,962,532 Hz"
http://www.human-resonance.org/transmutation.html