Joe Blake
21st February 2008, 17:36
A very interesting concept ...
http://www.gizmag.com.au/the-gravity-powered-floor-lamp/8854/
I wonder whether the concept could be modified by having a solar (or wind) powered pump raise a few gallons of water to a higher head and then have it trickle down during the night to power a lamp or two.
Joe
http://www.gizmag.com.au/the-gravity-powered-floor-lamp/8854/
I wonder whether the concept could be modified by having a solar (or wind) powered pump raise a few gallons of water to a higher head and then have it trickle down during the night to power a lamp or two.
Joe