Re: [silk] Best Science book you would recommend to a friend ?

[Dave Long]

In a related but different vein, I'm interested in finding more books  
like _QED: The Strange Theory of Light and Matter_ or _Naive set  
theory_.

Any suggestions for science books which actually manage to hit that  
elusive median, where the calculations are neither too daunting for  
novices nor simply handwaved away?

-Dave