Johannes Diderik (joːˈhɑnəs ˈdiːdərik). 1837–1923, Dutch physicist, noted for his research on the equations of state of gases and liquids: Nobel prize for physics in 1910
van der Waals in American English
(vɑn dəʀ ˈvalz)
Jo‧ˈhan‧ˈnes Di‧de‧rik (jɔˈhɑˈnəs didəʀɪk) 1837-1923; Du. physicist