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.
Total stations are one of the most common surveying tools used today. They comprise of an electronic theodolite and an electronic distance metre/measurement (EDM) component. Robotic total stations are also available which allow for single-person operation by controlling the instrument using a remote control. History. Electronic distance measurement equipment was initially developed around 1940, and was commercially available in the 1960s. The first total station (electronic theodolite and EDM) was developed in the late 1970s. General Information. Total stations have the ability to record measurements and angles to data recorders or cards which can be processed using computer software upon return from the survey. For optimal accuracy, they are used with a prism which reflects light waves back to the measurement device to determine a measurement. In circumstances where accuracy is not required to be at a maximum, most total stations can be used in reflectorless mode whereby they can obtain a distance measurement to a feature without ...