Probably make you decide gettomg batteries isn't that much trouble after all.
Ciao, Graywolf ---------------------------------------------------------------- ----- Original Message ----- From: Nitin Garg <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, February 15, 2002 5:07 PM Subject: Re: Cool idea > On Fri, Feb 15, 2002 at 03:08:22PM -0500, Peifer, William [OCDUS] wrote: > > Nitin wrote, regarding the foot-pump dynamo to power your laptop computer: > > > let see: a dell 4000 series laptop has a battery of 1800mAh at > > > 14.8V.... [Snip] Thats ~22834.286 calories. > > > > > now acc. to > > > http://diabeticgourmet.com/calculators/799run.shtml > > > A perons weighing 150 pounds (kgs?) jogging 5 miles burns 489.75 > > > calories. > > > > > To be able to foot-pump more energy than that in a few minutes seems > > > totally impossible even with 100% efficiency. Either is a fiasco or the > > > above conversions have a flaw :) > > > > Hi Nitin, > > > > The answer is that the thermodynamic calorie (with a lower-case "c") and the > > metabolic or dietary Calorie (with an upper case "C") are not equal. The > > metabolic Calorie is actually 1000 thermodynamic calories. A 150-pound > > jogger actually burns about 490,000 thermodynamic calories (about two > > million joules). > > Ah yes, that explains it :). So the 22834.286 calorie is more like a 410 > yards run at 100 efficiency of the gadget. Would that be too tiring to > lazy folks ? :) > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
