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effective radiating area |
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effective radiating area, the total area of the surface of the transducer that actually produces the sound wave. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 2007), used an Autosound[TM] with different intervention methods and one measured the temperature distances over 40 times the effective radiating area (ERA) (Garrett et al. 17,18) Johns et al (18) have argued that the US Food and Drug Administration (FDA) guidelines, (19) which permit large variability in values for total output power (in watts) and effective radiating area (ERA, in square centimeters), result in unacceptably large variability in spatial average intensity (SAI, in watts per square centimeter). If we are advised that the effective radiating area (ERA) of an applicator is 5 [cm. |
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