On being high frequency waves, ultrasound possesses high intensity, and therefore can penetrate any solid or liquid medium.
1. Ultrasound can kill bacteria and therefore can be used for water purification.
2. To detect cracks in metal and in thick walls: Ultrasound can be used to detect cracks in walls of huge structure like atomic power plant. The cracks or holes inside the metal blocks or RCC walls which are invisible from outside reduces the strength of the structure. Ultrasonic waves are allowed to pass through the walls and detectors are used to detect the transmitted waves .If there is a crack in the wall, the ultrasound gets reflected back indicating the presence of defect.
3. Echocardiography: By making ultrasound of some specific intensity, these are made to reflect from various parts of the heart and form its image. This technique is known as echocardioigraphy.
4. Ultrasound may be used to break stones formed in the kidney. The crushed stone later get flushed out with urine.
5. Sonography: Ultrasonography is used for examination of the factor during frequency to detect congenial defects and growth abnormalities.
