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More years ago than I care to count, I took my one and only high school physics class. I was overwhelmed.
In fairness, so was the poor teacher. He spoke with an accent, and his most oft-uttered plea was, “Please-a! You have-a to pay attention-a!”
Needless to say, most of us did not. Unlike many of my peers, I was never a prime disruptor of high school classes, most of which I enjoyed, but I was definitely one of those not paying much attention in physics class.

As I recall, we all passed the course. But I’m sure some of us, myself included, were awarded a passing grade by that teacher only to ensure he would not have to face us again in the following semester.
In the threescore-and-five years since then, I have learned—first to my chagrin, eventually to my delight—that it is the laws of physics that govern the universe we inhabit, and everything in it. Alas, I really should have paid more attention.
The physics of music is one example. One of my favourite pastimes while writing, reading, driving—pretty much anything—is listening to music. I enjoy big band arrangements, ‘40s swing, ‘50s rock ‘n’ roll, ragtime and stride piano, to name a few genres. But my preferred music from quite a young age has been the classical repertoire—opera overtures, ballet scores, symphonies, sonatas, piano concertos, and the like. When engaged in passive pursuits today, I am rarely without airpods stuck in my ears.
This fondness for the classical catalogue was ingrained early by my father, who would join me and my younger brother to listen to radio broadcasts in our bedroom as we were falling asleep. On occasion, Dad was asleep before we were, but that didn’t spoil our enjoyment. His favourite piece was the Prelude to Act III of Lohengrin, by Richard Wagner, which opened the weekly broadcast of the Toronto Symphony Orchestra.

My brother’s favourite was Pictures at an Exhibition by Modest Mussorgsky, while I delighted to the stirring, operatic overtures by Giacomo Rossini. To this day, I relish listening to their rollicking sounds.
So, imagine my surprise when I recently discovered in an online podcast that sounds, of whatever type, regardless of origin, make no noise. Sound, I learned, is silent. In space, in our earthly atmosphere, everywhere.
Everywhere, that is, except in our brains. And that is where physics enters the picture, confounding me yet again.
Without our brains, I’m now led to believe, we would hear not even the loudest sound. Mind you, without brains we would be conscious of nothing, so that does make sense. But until recently, I never realized that the very best music ever composed by Mozart, Joplin, Count Basie, Dylan, Kristofferson, Cohen, and all the others makes no noise whatsoever until perceived by our brains. The fact is, nothing in the universe makes a noise until it is registered by our brains.
Forgive me if you have long known this, but sound, rather than being noisy, is a series of silent waves, produced when the source of that sound—a violin perhaps, or a jackhammer—vibrates, pushing against the surrounding air and creating areas of high and low pressure.

The length of these sound waves varies, of course, producing different frequencies, pitches, volumes, and amplitudes. Physics naif that I am, I had to look up the meaning of those terms. The length of a wavelength determines the distance between successive waves, some of which are compressed, others expanded, resulting in higher and lower pitches.
But according to the podcast, none of these make any noise at all until they reach our ears. And even then, they are silent until they’ve passed through the ear’s component parts—the tympanic membrane, the ossicles, and the cochlea. It is only when the vibrations picked up by the ears are transmitted to the brain via the cochlear nerve that we actually hear them.
Mind you, soundwaves travel quickly—343 metres/second through the air—but soundlessly until picked up by the brain. To my young self, though, lying cozy in my bed with Dad beside me, that concept was never imagined. The sound of the music seemed instantaneously audible from our tinny radio speaker.
How, you might ask, could I have believed that? Well, if that long-ago, frustrated physics teacher ever presented this information in my high school class, it totally eluded me. I always thought the lovely, musical sounds I appreciate originated with the instrument or voice producing them, or with the device that recorded and transmitted them.
I can scarcely imagine that the magnificent, baritone voice of the late Dmitri Hvorostovsky, for instance, standing on stage as he sings the comedic largo al factotum from Rossini’s The Barber of Seville, is utterly devoid of sound for whatever interval of time it takes to reach my ears in the back row of the uppermost balcony.

I wonder if Simon and Garfunkel ever contemplated that notion when singing The Sounds of Silence. Probably not.
On the other hand, the elderly Beethoven, almost totally deaf, would have heard his magnificent ninth Symphony only in his brain.
Anyway, music is but one example of how the laws of physics govern everything in the known universe. And the amazing thing is that those laws change over time, as new discoveries are made. No single law is immutable, but collectively they are supreme.
Now, someone with a fuller grasp of physics than I might well cry Poppycock! at my naïve understanding, might well scoff at my puerile grasp. And, truth be told, if presented with proof my newly-formed perception is incorrect, I would happily recant. The very idea that sound makes no noise anywhere in the universe except in the brain still confounds me.
Despite the podcast, the infantile part of my brain clings to the idea that the sounds of music spring gloriously forth everywhere at the very moment they are formed at source.

To have this belief restored, I confess, would be music to my ears!


































