BBC News: Molten metal batteries for the grid

Mon Sep 22 12:02:42 CDT 2014

On 9/22/2014 12:36 PM, Nan and Sandy Sanders wrote:
> Same idea but without water. 
> http://www.scientificamerican.com/article/energy-storage-hits-the-rails-out-west/ 

  My 50's era 4" Unitron refractor follows celestial objects very 
accurately via a flyball governed falling weight (gravity drive). No 
electrical power required.

  https://www.youtube.com/watch?v=agC1aJMBLlA