alan jhonn aguiar schwyn wrote: > > > I think that not is for "an adult athlete"... > In Uruguay, in a site that not have electricity.. The childrens use this > dispositive.. > And not need much effort than ride bikes for a while... > Regards > Alan
bear in mind that the *minimum* time it takes to fully charge a single XO laptop is roughly two hours. once you're providing all the power the laptop can take at any one time, providing more (i.e., by being a stronger athlete) doesn't do any good (unless maybe you want to charge two laptops at once). two hours is a long time to engage in any, even moderate, physical activity. it's best to think of this problem in these terms: what is the ratio of "usefulness time" to "charging time". for the current laptop models, that ratio is about 2 to 1 -- if you charge the laptop for 1 hour, it will run for about 2 hours (very approximately). this isn't a very good ratio -- clearly 10 to 1 would be much better -- charge for an hour, and get 10 hours of use, or, charge for just 12 minutes to get the same 2 hours of use. as noted below, we hope for 1.75 to be much better (but probably still not 10 to 1). paul > > > From: cjlhomeaddr...@gmail.com > Date: Thu, 27 Oct 2011 14:29:19 -0400 > Subject: Re: harvesting energy > To: tony_ander...@usa.net > CC: devel@lists.laptop.org > > > > On Thu, Oct 27, 2011 at 2:14 PM, Tony Anderson <tony_ander...@usa.net> wrote: > > > Has anyone estimated the work required to charge an XO? Mike Lee gave a demo > some time back at the Washington D.C. Learner's Club which seemed to show > that > it would be a difficult workload for an adult athlete to charge a laptop. > > > > > > Tony > > > That equation will likely change substantially with the XO 1.75. > > cjl > > > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel > part 3 text/plain 129 > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel =--------------------- paul fox, p...@laptop.org _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel