Language does not simply mirror reality, it helps create our sense of reality by giving meaning to events. Rather than thinking of ideas in coming up with words to express them, we usually think in words. Inaccurate use of language can harm speakersâ credibility by making them sound less intelligent or ill informed.
Ultrasound is high frequency sound wave with frequencies of 20 kHz or higher. (Fig. 1) Ultrasound has many practical applications. It is often used in cameras to measure distance and used in ships to measure sea depth.However, more interesting applications of ultrasound are in the field of medicine. Using an array of piezoelectric transducers, ultrasound can be used to image the internal organs.Fig. 1) Ultrasound has many practical applications. It is often used in cameras to measure distance and used in ships to measure sea depth. However, more interesting applications of ultrasound are in the field of medicine.
Ultrasounds are common procedures during pregnancy. It's a non-invasive prenatal test used to ensure that Baby is developing properly, to check the baby's estimated size and to see how the baby, placenta and umbilical cord are positioned. At the 20-week ultrasound, it's also an opportunity to learn the baby's sex... if Baby is willing to reveal that information to you. The 20-week ultrasound is usually done with a special wand called a transducer that is used on the exterior of the belly. It allows the technician to see into the uterus, as shown above. Earlier ultrasounds may be conducted with a transvaginal probe (To give you a hint what that's like, they use a condom to sheath the probe before inserting it) because the baby is smaller.