The electric power of 1.5 nW is perceptible
|Umsetzung||H. Asatryan, E. Grycko, W. Kirsch, T. Mühlenbruch|
|Technisches Management||M. Fleermann|
In the context of Energy Harvesting (cf. ,) one is interested in consumer loads whose work necessitates only minimal electric power. We address here a similar problem, namely that of perceptibility of electric power. We say that an electric power P is perceptible if it is sufficient for a consumer load whose work can be sensed by a human. In  the power P necessitated by commercially available economical consumer loads is determined empirically. The investigation of a quartz watch reveals in particular that the electric power
(1.1) P = 3.6 10−6 W
causes a visible movement of the seconds hand and is therefore perceptible.
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