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A measuring instrument is a device to measure a physical quantity. In the physical sciences , quality assurance , and engineering , measurement is the activity of obtaining and comparing physical quantities of real-world objects and events .
The original bat calls are digitised and the zero crossing points used to produce a data stream which is recorded on a memory card. There are sophisticated timing and trigger controls and the device can be set to respond to bat calls, so that many hours of recording are available in unmanned situations.
Pages in category "Measuring instruments" The following 200 pages are in this category, out of approximately 375 total. This list may not reflect recent changes .
This can be used to estimate the speed of a flying bat or to identify bats which are echolocating while roosting. A bat call from a bat approaching or departing at 6.8 metres per second (15 mph) calling at 50 kHz will typically show a doppler shift of +- 1 kHz and pro rats. This can cause uncertainty with some species such as Pipistrelles.
The harp trap is a significant tool for measuring aspects of bat ecology, [1] [6] [7] most notably to obtain information about bat populations and movement for public health [8] [9] and conservation management [4] [10] purposes. Even though visually apparent when set out in the open, harp traps are effective if placed where natural features ...
The MLB's bat-tracking data shows that Shohei Ohtani's swing generates the most bat speed for the Dodgers, while Mookie Betts' swing squares up the most and Freddie Freeman's swing is the shortest.
Name Purpose Ammeter (Ampermeter) Measures current Capacitance meter: Measures the capacitance component Current clamp: Measures current without physical connection Curve tracer: Applies swept signals to a device and allows display of the response Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit
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