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van der Waals, Johannes Diderik

(Encyclopedia)van der Waals, Johannes Diderik yōhäˈnəs dēˈdərĭk vän dər väls [key], 1837–1923, Dutch physicist. It had been known for some time that the behavior of real gases differs from that of an i...

intermolecular forces

(Encyclopedia)intermolecular forces, forces that are exerted by molecules on each other and that, in general, affect the macroscopic properties of the material of which the molecules are a part. Such forces may be ...

van der Meer, Simon

(Encyclopedia)van der Meer, Simon, 1925–2011, Dutch physical engineer. He spent nearly his entire career at CERN, where he did his most important work with Carlo Rubbia. They discovered the W and Z particles, whi...

Heyden, Jan van der

(Encyclopedia)Heyden, Jan van der yän vän dər hīˈdən [key], 1637–1712, Dutch architectural and landscape painter. He worked chiefly in Amsterdam. His charming pictures of towns, buildings, and public square...

Van Der Zee, James

(Encyclopedia)Van Der Zee, James, 1886–1983, American photographer, b. Lenox, Mass. The son of Ulysses S. Grant's maid and butler, Van Der Zee opened his first studio in Harlem, New York City, in 1915. For 60 yea...

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