SCIENCE IN THE NEWS DAILY
Debut for World's Fastest Camera
from BBC News Online
The fastest imaging system ever devised has been demonstrated by researchers reporting in the journal Nature. Their camera snaps images less than a half a billionth of a second long, capturing over six million of them in a second continuously.
It works by using a fast laser pulse dispersed in space and then stretched in time and detected electronically. The approach will be instrumental in analysing, for example, flowing blood samples in a search for diseased cells.
What is more, the camera works with just one detector, rather than the millions in a typical digital camera. Dubbed Serial Time-Encoded Amplified imaging, or Steam, the technique depends on carefully manipulating so-called "supercontinuum" laser pulses.
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Extreme events, such as super floods and hurricanes, are becoming more common, so civil engineers are trying to adapt civil infrastructure such as bridges to these unpredictable and sometimes devastating meteorological events. Engineer Ana Barros discusses how engineering can prepare us for extreme weather events, but also how changing climate and population conditions can affect the ability of infrastructure to hold up over time.
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