medical ultrasound also known as diagnostic sonography or ultrasonography is a diagnostic imaging technique based on the application of ultrasound. it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs.
ultrasonic parking sensor parking sensors are proximity sensors for road vehicles designed to alert the driver of obstacles while parking. these systems use either electromagnetic ultrasonic sensors.
a touchscreen, or touch screen, is an input device and normally layered on the top of an electronic visual display of an information processing system. a user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus or one or more fingers.
ultrasonic anemometers, first developed in the 1950s, use ultrasonic sound waves to measure wind velocity. they measure wind speed based on the time of flight of sonic pulses between pairs of transducers. measurements from pairs of transducers can be combined to yield a measurement of velocity in 1-, 2-, or 3-dimensional flow.
a motion detector is an electrical device that utilizes a sensor to detect nearby motion. such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. they form a vital component of security, automated lighting control, home control, energy efficiency, and other useful systems.
an ultrasonic humidifier uses a ceramic diaphragm vibrating at an ultrasonic frequency to create water droplets that silently exit the humidifier in the form of cool fog. usually the mist gets forced out by a tiny fan, while some ultra mini models have no fans.
a barometer is a scientific instrument that is used to measure air pressure in a certain environment. pressure tendency can forecast short term changes in the weather. many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries.. barometers and pressure altimeters the most basic and common type of altimeter .
a breathalyzer or breathalyser a portmanteau of breath and analyzer/analyser is a device for estimating blood alcohol content bac from a breath sample. breathalyzer is the brand name a genericized trademark for the instrument that tests the alcohol level developed by inventor robert frank borkenstein. it was registered as a trademark on may 13, 1954, but many people use the term to refer .
ultrasonic nozzles are a type of spray nozzle that uses high frequency vibration produced by piezoelectric transducers acting upon the nozzle tip that will create capillary waves in a liquid film. once the amplitude of the capillary waves reaches a critical height due to the power level supplied by the generator , they become too tall to support themselves and tiny droplets fall off the tip .
a security alarm is a system designed to detect intrusion – unauthorized entry – into a building or other area such as a home or school. security alarms are used in residential, commercial, industrial, and military properties for protection against burglary or property damage, as well as personal protection against intruders.security alarms in residential areas show a correlation with .
southwest airlines flight 1380 was a boeing 737-700 that experienced an uncontained engine failure after departing from new york–laguardia airport en route to dallas love field on april 17, 2018. debris from the failed engine damaged the fuselage, causing rapid depressurization of the aircraft after damaging a cabin window. the crew conducted an emergency descent and diverted to philadelphia .
ultrasonic transducers or ultrasonic sensors are a type of acoustic sensor divided into three broad categories: transmitters, receivers and transceivers. transmitters convert electrical signals into ultrasound, receivers convert ultrasound into electrical signals, and transceivers can both transmit and receive ultrasound. in a similar way to radar and sonar, ultrasonic transducers are used in systems which evaluate targets by interpreting the reflected signals. for example, by measuring the time
ultrasound energy, simply known as ultrasound, is a type of mechanical energy called sound characterized by vibrating or moving particles within a medium. ultrasound is distinguished by vibrations with a frequency greater than 20,000 hz, compared to audible sounds that humans typically hear with frequencies between 20 and 20,000 hz.