battery
egrossman | January 10, 2012by Elizabeth Grossman
Next month will mark the 200th anniversary of Charles Dickens' birth. Given the last two centuries' stratospheric advances in technology and the past century's progress in human rights policy, one would think that child labor, dangerous and unhealthy working conditions, and the export of hazardous industrial refuse to poor countries and communities would be a thing of the past. But as several reports released last month show, Dickensian working and living conditions are still very much with us. Children continue to be engaged in hazardous manual labor instead of…
jhalper | December 6, 2010
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…
rallain | June 11, 2010Back to the discussion about hiding an electric motor in a pro racing cycle. Before, I looked at a video of Fabian Cancellara to see how his speed and acceleration compare to other bikers. The claim on the internet is that he pulls away so fast that he must have a motor hidden in his bike.
Just to be completely clear, I don't think he is cheating. Then why bother? If you ask that then this must be the first time you reading this blog. I welcome you. No, but really, this is what scientists do. How hard would it be to cheat?
From my analysis, it seems that a person could ride like he…