| From a physics standpoint, this is a pretty silly idea. Here's why. Whether we're talking about radiation caused by wireless communication (e.g. wifi at 2.4/5 GHz) or high-frequency oscillations in a microprocessor, it's pretty safe to say that all of the significant electromagnetic radiation coming off of a wearable computer is under 10 GHz. Damage to proteins, DNA, etc. due to radiation is either caused by that radiation stripping electrons / breaking covalent bonds, or through heating. The sort of electromagnetic radiation that strips electrons and breaks covalent bonds is called ionizing radiation; ionizing radiation only occurs above a certain frequency threshold (depending on the material being ionized). This fact is, in fact, the reason Einstein got his Nobel in physics. Anyway, its pretty safe to say that, say, red visible light (400 THz) does not ionize important human molecules. Ultraviolet is usually considered to be the low end of the ionizing radiation range. Therefore, because 400 THz > 10 GHz, radiation coming from wearable computers could not possibly cause molecular damage to humans through ionization. The light coming from the screen is significantly more dangerous in this respect than anything coming from the other electronics. How about heating? Consider that a typical wearable computing device only consumes a few watts. If this power were distributed diffusely, it is harmless, and if it were focused, it would cause obvious and painful burns, which we know doesn't happen. |