Monthly Archives: October 2011

Ultrasonics – Sound – Mechanical Vibration Spectrum

Posted on October 31, 2011 by John Fuchs

Ultrasonics is generally described as the technology of sound above the range of human hearing.  The use of the term “sound,” however, is questionable since “sound” would imply something we (humans) can hear.  It all comes down to the question asking, … Continue reading →

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Useful Information – Power Configurations

Posted on October 28, 2011 by John Fuchs

Before I start applying all of our new knowledge about sound to a discussion of ultrasonics, I thought I would interject this little tidbit of useful information about power configurations. Despite the fact that most companies employ skilled electricians, many … Continue reading →

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Ultrasonics – Sound – Harmonics

Posted on October 26, 2011 by John Fuchs

Previous blogs have introduced the phenomenon of resonance.  In fact, most objects can resonate at more than one frequency and in multiple modes of vibration.  This blog will concentrate on resonance at multiples of the the fundamental frequency.  These are “harmonics” … Continue reading →

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Ultrasonics – Sound – The Bad Side of Resonance

Posted on October 24, 2011 by John Fuchs

A previous blog explored some potentially useful properties of resonance.  The fact that resonance has the power to convert sound wave pressure into mechanical motion can be very useful.  On the other hand, however, the fact that it takes so … Continue reading →

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Ultrasonics – Sound – The Power of Resonance

Posted on October 21, 2011 by John Fuchs

Resonance, as discussed in a previous blog, can be either or both beneficial and/or detremental.  This blog will explore the beneficial qualities of resonance. Consider the model of a child’s swing discussed in the preceding blog.  We all know that … Continue reading →

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Ultrasonics – Sound – What is Resonance?

Posted on October 19, 2011 by John Fuchs

Nearly everyone has heard the term “resonance” or “natural frequency” but everybody has a little different idea of what resonance is all about.  In fact, this is understandable because resonance means different things under different situations and there are many different … Continue reading →

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Ultrasonics – Sound – Beat Frequencies

Posted on October 17, 2011 by John Fuchs

The way in which sound sources operating at the same frequency combine to produce constructive and destructive intereference was discussed in a preceding blog.  In today’s blog, we will explore how sounds of two different frequencies combine to produce beat … Continue reading →

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Ultrasonics – Sound – Interactions of Sound Waves

Posted on October 12, 2011 by John Fuchs

Sound waves produced by multiple sources, or even within a single source in some cases, interact with one another to produce a variety of interesting and useful results.  These interactions are commonly referred to as “interference” but one should not … Continue reading →

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Ultrasonics – Sound – Effect of Speed of Sound on Wavelength

Posted on October 4, 2011 by John Fuchs

The speed at which sound travels through a sound conducting media varies depending on the media.  In general, sound travels faster in liquids than it does in gasses.  Solids are the best conductors of all beating out both liquids and … Continue reading →

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