This is EXACTLY the kind of recipe I had been searching for! Super easy, lots of greens, and great taste! Seriously, I used almost a 2 whole cups of spinach in mine and with the banana and milk it doesnât taste bad at all. Thanks for this recipe, it gives me no excuses not to get my greens in:) Reply.
The laws of sound physics (acoustics) or How does it work? The human ear can generally hear sounds with frequencies between 20 Hz and 20 kHz (the so called âaudio rangeâ). 20 Hz is a very low frequency while 20 kHz is a very high frequency. Examples of low frequencies in our surroundings are the bass in music or the low humming that a fan generates. Examples of high frequencies are the treble in music or the high notes of a small child.
And what is more, ultrasonics is palpable when touching the weld tool. For ultrasonic welding, the frequency range is between 20 kHz and 70 kHz. Additional fields of application: Imaging ultrasound in the field of medical diagnostics ranges between 1 and 40 MHz. It is not audible or palpable. In the field of industrial material testing, ultrasonics is used at frequencies from 0.25 to 10 MHz. Classification of ultrasonic frequency ranges â the range audible to the human ear only makes up a fraction of the entire span.