2 minuuttia 13 sekunttia
http://www.FreeScienceLectures.com
The plane is vibrated at some specific frequency. The waves travel across the plane and at some places they add together and at other places they cancel out. Where they cancel out the salt stucks because there is no vib
4.0
538
Leikkaa ja liimaa tämä koodi jos haluat näyttää videon kotisivullasi tai blogissasi: