Here’s a video that presents four different cleantech concepts, with an interesting mix of validity. The first, covering city streets with a reflective white coating, is completely valid, as it causes a significant percentage of the incoming solar radiation to …
Tag: force of gravity
Gravity Is Not Illuminating Sub-Saharan Africa
The concept discussed in this video is funny, IMO, as it combines a good idea (highly efficient lighting powered by a renewable resource) and a gross misunderstanding of basic science. There is no energy in gravity; the energy lighting the lamp …
