What is flow?

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Time of flight sensor

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Time of flight sensors measure the time it takes something to travel a distance through a medium. Typically, this is the measurement of the time elapsed between the emission of a wave pulse, its reflection off of an object, and its return to the ToF sensor.   TIME-OF-FLIGHT PRINCIPLE The Time-of-Flight principle (ToF) is a method for measuring the distance between a sensor and an object, based on the time difference between the emission of a signal and its return to the sensor, after being reflected by an object. Various types of signals (also called carriers) can be used with the Time-of-Flight principle, the most common being sound and light. TeraRanger sensors use light as their carrier because it is uniquely able to combine higher speed, longer range, lower weight, and eye-safety. By using infrared light we can ensure less signal disturbance and easier distinction from natural ambient light, resulting in the highest performing distance sensors for their given size and...
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SemiConductor type strain gauge

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Semiconductor type strain gauge In this type of strain gauge we use doped silicon or  germanium as a sensing element. When we apply stress to this type of material its Resistance is changed, by measuring the  resistance change we can  measure the stress applied on this material. Gauge factor of this type of strain gauge is well around 100. Unlike other strain gauges, semiconductor strain gages are based upon the piezoresistive effects of silicon or germanium and measure the change in resistance with stress as opposed to strain. The semiconductor bonded strain gage is a wafer with the resistance element diffused into a substrate of silicon. No backing is provided for the wafer element and bonding it to the strained surface needs extra care since only a thin layer of epoxy is used to attach it. Size of a semiconductor strain gauge is much smaller and the cost much lower than for a metallic foil sensor.
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