Energy generation
The BBC had a fascinating little article on its website about ENERGY GENERATION
"Reading this, your body at rest is emitting about 100 watts into the environment. If you're sitting in an open plan office, count the number of surrounding colleagues and you don't need to be a maths genius to appreciate the possibilities of tapping into all that wasted energy.
Instead it could provide a renewable energy source to power office lighting or laptops - and it may be possible to recharge your mobile phone by walking to the photocopier.
Energy harvesting is an exciting field to explore, looking at ways to tap into the energy available from the workings of the human body or transport vibrations.
The concept was pioneered by the military sector, largely bankrolled by the DARPA in the United States (Defense Advanced Research Projects Agency).
Their interest is mainly in reducing the need for soldiers to carry heavy rechargeable batteries that serve essential yet power-hungry communication devices. So they've looked at how "heel-strike" generators, powered through the pumping motion of a footstep, can be embedded within a boot heel. These devices currently achieve upwards of 3 - 6 watts of power output.
So the 34,000 commuters who pass through Victoria underground station at rush hour, for example, could theoretically generate enough energy to power 6,500 LED light fittings - energy that today is disappearing into the ground. "
absolutely fascinating stuff as far as I am concerned
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