Can devices be powered using ambient radiation from existing broadcasts?

可以利用现有广播的环境辐射为设备供电么？

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Wireless technology: it is already possible to send electricity without wires. Can devices be powered using ambient radiation from existing broadcasts?

无线技术：无线输电已是可能。可以利用现有广播的环境辐射为设备供电么？

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The ambient reflection only reacts to ambient light; thus, using an omnidirectional light has no effect.

环境反射仅对环境光起作用，因此，使用全向光是无效的。

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In addition, the Optical Picture (OPC) feature helps save power by using a sensor on the front of the TV to detect ambient room light, and automatically adjusts TV brightness for the best picture.

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