3 ms·
This is an amazing demonstration of low-technology. Is this documented anywhere with diagrams?
by teachrdan 3y ago
This is an amazing demonstration of low-technology. Is this documented anywhere with diagrams?
- BizarroLand 3y agoIDK, I read about it in an issue of Mother Earth News I think?
- BizarroLand 3y agoFound one of the ones I've read: https://www.motherearthnews.com/sustainable-living/renewable-energy/solar-air-heater-zmaz06djzraw/ https://www.motherearthnews.com/sustainable-living/renewable...