1)High and ultra high ultrasound waves are used in acoustic microscopy, with frequencies up to 4 gigahertz

2)While low-intensity or high-frequency ultrasound is mainly used for analysis, non-destructive testing and imaging, high-intensity ultrasound is used for the processing of liquids such as mixing, emulsifying, dispersing and deagglomeration, cell disintegration of enzyme deactivation.

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The two application of the ultrasound are :- 

1. Ultrasound when applied in specific configurations can produce short bursts of light in an exotic phenomenon known as Sonoluminescence.
2. This phenomenon is being investigated partly because of the possibility of bubble fusion.

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