December's calendar photograph is a battery of five solar cells that also stores electricity in series. The cells were invented and developed at the Weizmann Institute in the late 1970s. These not only converted sunlight into electricity, but also could store some of that energy using a battery-type setup with electrodes in a chemical solution, so that they could provide electricity day and night.
The idea of efficiently storing solar energy has taken more than one twist and turn since then - various forms of artificial photosynthesis, for example. Interestingly enough, one of the latest…
Advertisment
