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| | | #REDIRECT: [[Hot-wire anemometer]] |
| #REDIRECT [[hot-wire anemometer]] | |
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| == hot-wire anemometer ==
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| <div class="definition"><div class="short_definition">An [[anemometer]] that utilizes the principle that the [[convection]] of [[heat]] from a body is a function of its [[ventilation]].</div><br/> <div class="paragraph">In its usual form it consists of a thin platinum wire heated to approximately 1000°C so that its [[temperature]] is relatively independent of [[ambient temperature]] variation. [[Wind speed]] is determined by measuring either the [[current]] required to maintain the hot wire at a constant temperature or the [[resistance]] variation of the hot wire while a constant current through the wire is maintained. Wind speeds as low as a few centimeters per second can be measured in this manner. The [[response time]] constant of the wire can be made very small. <br/>''See'' [[hot-film anemometer]].</div><br/> </div>
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