电子束和X光加速器都可以用来辐照各种不同形状和大小的食品，不过X光穿透大型食品的能力更佳。
Electron beams and X-ray accelerators can both be used to irradiate various shapes and sizes of food, although X-rays are better at penetrating large items.
手指静脉识别仪包括近红外线LED灯和黑白相机传感器。 近红外LED灯发出近红外射线，当近红外射线穿透手指时，手指静脉的血红蛋白将吸收近红外光，因此，图像中静脉将变为黑色。
Each unit houses a near-infrared (NIR) LED and monochrome CCD camera sensor, so as the red pigment in blood (hemoglobin) absorbs NIR light, veins appear as dark lines on the resulting image.
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