Atomic Dog Publishing, a small textbook publisher that specializes in electronic editions of books, sent an e-mail message to its customers today announcing that it has been purchased by Thomson ...

Picture an atom, and you may imagine spherical electrons orbiting a nucleus packed with particles like neutrons. Only certain orbits - quantum levels - are possible. It's a simplistic model, yet ...

IN the review of “A New View of the Origin of Dalton's Atomic Theory,” published in your issue of April 16, your reviewer, in summing up the evidence as to the origin of the atomic theory, makes an ...