[ Date Index ] [ Thread Index ] [ <= Previous by date / thread ] [ Next by date / thread => ]
On Wed, Apr 14, 2010 at 10:57 AM, Julian Hall wrote: > 'In 1905 the Serbian inventor Nikola Tesla built a huge 18-storey tower in > Long Island. His aim was to create the world's first power station that > would transmit wireless electricity around the globe' > > http://news.bbc.co.uk/1/hi/technology/8618161.stm "A wireless keyboard uses four batteries. We made about 40 billion of these in the world this year." I somehow doubt that number, as it would mean about six wireless keyboards per person a year. Reading the article made me think of our electrical toothbrush, which can be charged by putting the charger's pin, which is entirely covered in plastic, into a hole in the toothbrush. No metal to metal contact there. Martijn. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html