所有这些儿童足迹以及在奎塞三角洲(khuiseb delta)发现的好几十个人类足迹都使用光学激光扫描仪详细记录下来存放在数字档案中。
All of the children's footprints, along with scores more human tracks in the Khuiseb Delta, are being recorded in detail with an optical laser scanner and are to be placed in a digital archive.
VadoHD的视频规格依然只有720p，并且没有光学变焦功能，只支持两倍数字变焦，设备通过USB接口与外界连接。
The camera still shoots at 720p with a fixed optical zoom (but 2X digital) lens and attaches directly through its own USB connector.
其中紫色喷发状物质是几百万度高温的气体，由Chandra X射线天文中心探测；其他颜色展示了斯隆数字星空调查的光学图片中的一些星系。
The purple emission is multi-million degree gas detected in X-rays by NASA's Chandra X-ray Observatory and the other colors show galaxies in an optical image from the Sloan Digital Sky Survey.
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