“ capturing more light KB says: *The trade-off, of course, is that the other side of the cylinder is shaded.* Perhaps the bottom half of the... (read full comment) ” 

Posted on October 7, 2008 at 2:58 AM EDT

“ video links are swapped fyi: as of now (monday 10 dec 2007) the links to the two videos are swapped -- but this doesn't diminish the great... (read full comment) ” 

Posted on December 10, 2007 at 7:09 AM EST

“ symbology... Once I learned that the symbol for female represents Venus's hand mirror, I had no trouble remembering which was which. Hope that helps. (read full comment) ” 

Posted on November 14, 2007 at 6:53 PM EST