Tuesday, January 19, 2010
Lefties Originate in the Stars?
My father was left-handed, which meant when we went out to eat (about 3-4 times a year at most), he needed to be seated in the proper place so as not to bump others. Maybe that made me more interested in the book: Right Hand, Left Hand which takes the apparently simple issue of handedness, and traces it into history (how did societies agree on driving on the right or left) and physics (how do we define handedness, well you need to define north and south, and then you get into stars and galaxies) and chemistry (right handed and left handed molecules--but on earth biology has its preference). Now there's a theory to explain the preference, not that I understand it (the galaxy formed in circularly polarized light), but anyone interested can go there..