Near-Infrared | 合法醫療器材資訊網

2018年5月14日—Where?Thenear-infrared(NIR)canbedefinedastheregionbetween750nmand2,500nm,althoughtheboundarybetweentheNIRandthemid ...

Post by Lina Persechini

What? As you move away from the visible region of the electromagnetic spectrum you encounter the Infrared region. Infrared light is divided into three spectral regions: near, mid- and far-infrared

Where? The near-infrared (NIR) can be defined as the region between 750 nm and 2,500 nm, although the boundary between the NIR and the mid-Infrared (MIR) region can vary slightly.

When? In the year 1800, astronomer and composer William Herschel had been using dark filters in a telescope to study the sun when he noticed that he could still feel the heat of the sun’s rays through the filters. It was through this ‘sensation of heat’ that he concluded that there must be invisible light beyond the visible part of the electromagnetic spectrum.

How….can we use it? Herschel’s discovery led to the development of astronomic...