вторник, 5 декабря 2017 г.

Schoolgirl invents low-cost lead detecting device

tcsnfun 22yo Sahuarita, Arizona, United States

Schoolgirl invents low-cost lead detecting device


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SinfulKisses2 38yo Hot N Spicy, New Mexico, United States

Gitanjali Rao's device uses carbon nanotubes to detect the presence of lead in water. more on Geo altCom
lik2watch71 40yo Northampton Area, Massachusetts, United States

tad022809 24yo Toledo, Ohio, United States

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