He had been student of Heike Kamerlingh Onnes, who had been the first to liquefy helium (a feat for which Onnes received a Nobel Prize).
... km² (42.8 mi²) of it is land and 2.2 km² (0.8 mi²) of it is water. The total area is 1.92% water. Demographics As of the census2 of 2000, there are ...