The voltage of a cell is a measure of the amount of energy per coulomb of charge, it's not a measure of the energy output of the device. The point was that energy is measured in Joules, not Watts or Volts.
Teenager invents £23 solar panel that could be solution to developing world's energy
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The voltage of a cell is a measure of the amount of energy per coulomb of charge, it's not a measure of the energy output of the device. The point was that energy is measured in Joules, not Watts or Volts.
First bulb looks like a standard mains fitting... no way it would be that bright off 9v 18watt or so...
The 2nd one is possible to get for camping in 12v 11watt configuration... so that might be possible.
Energy per unit of charge =! energy
They're totally different, just as an acceleration is different to a velocity.
, what ever happened to their free clean energy device? Been 2/3 years now, after the 'studio lights were too hot' demo.I think newspapers have a responsibility to be as correct as possible with these kinds of things. The Daily Mail is one of the harshest critics of our education system, yet seems oblivious to the fact its own pages are full of inaccuracies and sometimes plain untruths.
Soldato
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Ok, ok.Energy per unit of charge =! energy
They're totally different, just as an acceleration is different to a velocity.
Even so, I think his point was regarding the reporter's misunderstanding of the conversion between the two, not the difference between centripetal and cetrifugal forces. 
I'm certainly not going to argue with someone with the nick of Energize, but my understanding of voltage, whether AC or DC, was the potential energy between a source to ground. If it ain't required, it ain't going to be used. *sic*
"Perhaps you need a refresher course!"
Yes, I do.
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Melanin does have interesting properties, including high conductivity, negative resistence, etc.
http://en.wikipedia.org/wiki/Melanin
Photovoltaic properties though, I doubt it.
http://en.wikipedia.org/wiki/Melanin
Photovoltaic properties though, I doubt it.
Soldato
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he's talking about saving the planet, is this captain planet?!
yeah, wrapped in a very non-conductive keratin polymer.
its total rubbish, but interesting to see how many people are suckered into believing it.
here's a proper explanation you gullible fools
http://sites.google.com/site/edwardcraighyatt/hairsolarpanelnepal
http://sites.google.com/site/edwardcraighyatt/hairsolarpanelnepal
Soldato
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Energy per unit of charge =! energy
They're totally different, just as an acceleration is different to a velocity.
I think in the case of the 18W comment on the BBC that it can be taken to mean energy.