>> hours...using gravity! :-) (Consider the XO using >> about 2 watts...)
There seems little danger of this mechanism being useful on Earth for the XO-1. A 30kg human child who can move her own mass a meter vertically (via a series of pulleys, or perhaps just climbing stairs with a buddy riding piggyback etc.) can invoke only 300J of potential gravitational energy, or enough to let an XO sleep for two and a half minutes assuming a 100% efficient conversion from gravitational to electrical potential. Now on Jupiter (G = 26, nonhuman "children" massing 270kg, each able to relocate their own mass 3m vertically due to longer motor tendrils) they could invoke 21060J, a theoretical maximum of 5h50m of sleep time. Now we're talking. Apologetically, Ben _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
