cathedral

Hype or no, Nanotechnology is here to stay, Prof. Chacko Jacob explained at the recently held Science Communication Conclave at IIT Kharagpur An innocuous looking pouch. But as you open it and place it on top of your knee that has been bothering you no end, a warmth emanates and spreads to your aching joint. This is ‘Heat Pax’, the “Air activated body warmer”, as the label says. [1] Inside though, a marvellous chemistry is at work. The airtight wrapper of this pack contains fine iron particles combined with vermiculite (a form of clay which holds water) and carbon or…