50/60 Hz is nowhere near ultrasonic.
Methinks you be reading the power input label, not what it outputs.
Ultrasound is cyclic <http://en.wikipedia.org/wiki/Sound>sound pressure
with a <http://en.wikipedia.org/wiki/Frequency>frequency greater than the
upper limit of <http://en.wikipedia.org/wiki/Human>human
<http://en.wikipedia.org/wiki/Hearing_%28sense%29>hearing. Although this
limit varies from person to person, it is approximately 20
<http://en.wikipedia.org/wiki/Hertz>kilohertz (20,000 hertz) in healthy,
young adults and thus, 20 kHz serves as a useful **lower** limit in
describing ultrasound.
You can hear 60 Hz "60 cycle hum" the bane of music lovers the world
round...unless it's 50 cycle hum.
Like with "push/pull" audio amplifiers, I imagine that the sound wave
pressures are both positive and negative .... alternating pressure/vacuum
cycles.
Ultrasonic Cleaner ...at the doggie brain wash frequented by jewelry.
Essentially a good audio amp cranked to the max, a piezoelectric tweeter
and mind bendingly screaming loud bat music, all played in a bowl of water.
Ode
At 09:01 AM 6/23/2010 -0500, you wrote:
I have been doing some study on the mechanics of ultrasonic cleaners in
relation to liposomes and I am curious of some of the ramifications:
1) Ultrasonic cleaners work by producing alternating low and high sound
waves. The unit I am using does 50/60 Hz. The low phase produces the
bubble and the high phase implodes the bubbles which produces the cleaning
action so desired in such cleaners. Question: I can see the low phase
producing liposomes, but how are the liposomes immune to the high phase
that normally ruptures bubbles?
doug
--
The Silver List is a moderated forum for discussing Colloidal Silver.
Rules and Instructions: http://www.silverlist.org
Unsubscribe:
<mailto:silver-list-requ...@eskimo.com?subject=unsubscribe>
Archives:
http://www.mail-archive.com/silver-list@eskimo.com/maillist.html
Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com>
List Owner: Mike Devour <mailto:mdev...@eskimo.com>
