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Can Opera Singers Shatter Glass? | StarTalk


all right another question Michael Bruce
from Mountain View in California is it a
myth that opera singers can shatter
glass by singing high enough I’ve not
seen it done but I don’t see why it
wouldn’t be possible because there’s
certain frequencies that are called
resonant frequencies and other objects
and have you ever done this go up to
which maybe not I did it you go up to a
tree that’s way thicker than anything
you you would think of toppling okay and
then you just start pushing it alright
if there is a rhythm with which you can
push a tree that pumps the tree in
exactly the motion that you would
originally set it to do it’s the same
thing as pumping when you’re on a swing
it’s how you can just put yourself into
motion without touching anything you
sort of swainton your legs right at the
right moment that will add to that
motion then you tuck your legs back
right at the right moment so you can do
this to a tree and you will hit a
resonant frequency of the tree and if
you do this enough you can actually snap
a tree in half and so yeah oh yeah I do
it all the time it’s fun to the point
where I kill the tree but it’s fun to
just watch this pumping it’s literally
it’s physics and physics we call it
pumping you’re pumping a system it was a
in a resonant frequency of the system
itself the system wants to sway at that
rate now if you pump it in exactly that
way you all that energy stays there and
then the tree starts blowing it waving
in the breeze and it’s a sense of power
over nature and I did this I’d still do
it today so somebody’s vocals court
somebody’s voice right so you get it so
you get an object that has a resonant
frequency that can be yes that that a
human voice can reach at a high enough
volume and then it’ll start vibrating
okay if it’s at the resonant frequency
and if you can vibrate it with enough
energy at that frequency the glass is
not going to be able to stay with you
and you’ll just crack it good yeah yeah
so that’s so that so yes oh yeah yeah
yeah
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