The fragments, preserved between sheets of glass, respond to the infra-red spectrum - ink invisible to the naked eye can be seen and photographed.

红外线谱把这些保存在玻璃板之间的残片上肉眼无法识别的墨迹显现出来，并拍成照片。

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The atomic bonds between carbon and other atoms absorb infra red radiation.

碳与其他原子连接的原子键吸收红外线。

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It expatiates the implement method in detail, which involves the data communication state machine between gateway and Infra - red node, timer design and the management of data queue.

详细说明了红外网关的具体实现方法。其中包括网关与红外接收器的数据通信状态机、定时器设计以及数据队列管理。

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Now they have something that works like a flatbed document scanner, with a scanning head containing either six or 12 light-emitting diodes, each emitting light of a specific wavelength between 350 nanometres (ultraviolet) and 800 nanometres (infra-red).

ECONOMIST: Monitor

By tuning the quantum cascade laser and measuring how much of the infra-red radiation is absorbed on its way to a detector, hazardous gases in between can be identified.

ECONOMIST: Lasers

Infra-red communication suffers the same problems, but has the additional limitation of requiring a direct line of sight between objects as anyone who has tried to operate a television remote control with someone else standing between him and the television will know.

ECONOMIST: The human body as a computer bus