Formulas
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each of the black rectangles below before clicking
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| Flap 1 |  |
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| Flap 2 | |
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| Period | 1/frequency |
| Frequency | 1/period |
| Intensity | power (watts)/beam area (cm2) |
| Beam Uniformity Coefficient (BUC) | spatial peak intensity (w/cm2)/spatial average intensity (w/cm2) |
| wavelength | propagation speed/frequency |
| Duty Factor | pulse duration (sec)/pulse repetition period (sec) x 100 |
| Spatial Pulse Length | # of cycles in pulse x wave length (mm) |
| go-return-time | depth of sample volume x 2/propgation speed (mm/us) |
| Nyquist limit | PRF/2 |
| LARRD = | spatial pulse length (mm)/2 |
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