Self-Warming Jackets
jeffy124 writes: "Those of you in the frigid north who find their coats unfulfilling of their duties may be interested in a self-warming jacket. By using steel microfibres woven into the fabric plus a lithium battery, heat is actually generated to as much as 114 degrees fahrenheit. The jackets, sadly, come with a nasty price -- US$500. Among those interested in purchasing are skiers (including some Olympians), and the Military."
I was told by some DARPA person that one of the problems the military had with wearable tech was that a bullet which has just travelled through a lithium battery was more toxic than one which hadnt; wearing a coat with Li-ion elements is not the kind of thing you'd want to do on the battlefield. is that correct?
What happens if you turn the jacket "on" when nobody's wearing it? This thing must generate lots of heat in a small amount of time. My chem lab experience make me think the jacket might start to melt or burn...