text: An equation named for this man can be derived by truncating the virial expansion at the second coefficient.
full_question: An equation named for this man can be derived by truncating the virial expansion at the second coefficient. That equation named for this man incorrectly predicts a universal critical compressibility factor of three-eighths. A phenomenon named for him is proportional to the negative sixth power of distance as seen in the Lennard-Jones potential. The realization that atoms have volume accounts for the "b" constant of his namesake equation. This man names a set of weak intermolecular interactions that includes London dispersion forces. For 10 points, name this Dutch scientist whose namesake equation modifies the ideal gas law. 
first_sentence: An equation named for this man can be derived by truncating the virial expansion at the second coefficient.
raw_answer: Johannes Diderik van der Waals