Usually, the signal is used to generate a varying magnetic field, which in turn vibrates
a mechanical cone, so producing the sound.
The system, comprising an amplifier, vase and an acrylic resin cylinder, makes flowers' petals and leaves vibrate
and transmit sounds, just as the paper cones of stereo speakers vibrate
, the two said.
Since the frequency at which an object oscillates depends upon its mass and length, nanoscale objects can be made to vibrate
at extraordinary frequencies.
Nanoscale objects that vibrate
at radio frequencies could replace components in electronic circuits; cell phones, for instance, currently use the oscillations of a quartz crystal to transmit signals, but a nanorod could do the same job using less space and power.
For example, the note G (the fundamental) may bring with it the G next above (as the string vibrates
in halves), the D above that (as the string vibrates
in thirds), the G above that (as the string vibrates
in quarters), the B above that (as the string vibrates
in fifths) and so on, to infinity.
As you speak your voice makes the air in the cup vibrate
. The string starts to vibrate
I'm waiting in the "green room through what could be the longest 10 minutes of my life when my hip begins to vibrate
The tread blocks and reinforcing belts vibrate
and radiate energy outward, producing sound similarly to the vibrating cones in stereo speakers.
Resonance is the condition in which the components of a system - in this case, the plastic, the mold cavity, and the mold passageways - vibrate
at the natural frequency of the system.
Yet ever since youth began to vibrate
on their own making, efforts at social control of the youthful body's attachment to sex, drugs, and rock 'n' roll have been relentless.
In blow molding, pistons incorporated into the wall of the mold vibrate
the air as the mold closes around the parison, says Ibar.
"The sensors include a vibrating motor, like that found on a mobile phone, and these can be set to vibrate
to indicate when someone moves outside a desirable range, all designed to give feedback in real time that enables wearers to adjust their movements in performance."