Some readers of an earlier blog entry wrote to say that while it’s important to be able to tell the difference between cheese and soap, the technique I described, which employs an electron microscope, is too cumbersome for daily use. (MORE)
Jul 01
Some readers of an earlier blog entry wrote to say that while it’s important to be able to tell the difference between cheese and soap, the technique I described, which employs an electron microscope, is too cumbersome for daily use. (MORE)