London, Oct 27 : Monitoring dust levels in darkened tunnels often poses a big challenge, but now all one needs to do is take a picture with a flash camera to measure the dust, say scientists.
Dust has been found to cause throat and lung irritation for tunnel and mine workers. It can even lead to long-term serious health problems.
Masato Shinji at Yamaguchi University in Japan has claimed that one can easily measure the dust via a camera, simply by taking a flash photograph, reports New Scientist magazine.
The image produced by the camera shows the dust specks as white dots, which are easy to count with the help of software.