I'll conclude with a new way of thinking about waves.
Standing waves result from the superposition (addition) of two waves traveling in opposite directions, as with a skipping rope or a violin string.
The effect that I have discovered and presented is something different. I like to call it "sitting waves" because the waves appear to "sit still" [Mann, IEEE Consumer Electronics 5(1), 2015dec02, pp 33-143].
Sitting waves are formed by the product of two waves traveling in the same direction.
The image at left is one that I generated from the example shown in Wikipedia (Wikimedia Commons). The image on the right is one that I scanned from a roll of film captured by my SWIM (1974).
Over the past 42 years SWIM has evolved from 35 incandescent light bulbs totaling up to 2500 watts, to 1100 LEDs (i.e. to exceed 1080p by infinity HDTV resolution) on a 7 foot long stick, and finally, to an eyeglass based device that let's us see radio waves scanned onto the retina of the eye, thus giving rise to the new concept of Phenomenal Augmented Reality -- allowing us to see physical phenomena overlaid onto the real world.
For more information on Metasensing (the sensing of sensors and sensing their capacity to sense), see Janzen and Mann 2015.
For more information on Metaglasses, see our company website, http://getameta.com
For more information on some of the things you can visualize with SWIM, including sound waves, audio, video, radio, water, and any other kind of field, see http://wearcam.org/fieldary.pdf
Have fun and if you get as far as just building the simplest version with 10 LEDs, which you should be able to do in less than 1 hour, for less than $10, please reply with pictures and I'll give you some constructive criticism and useful feedback.