MEASUREMENTS OF THE RELATIVE PERMITTIVITY OF LIQUID WATER AT FREQUENCIES IN THE RANGE OF 0.1 TO 10 KHZ AND AT TEMPERATURES BETWEEN 273.1 AND 373.2 K AT AMBIENT-PRESSURE

The static relative permittivity (dielectric constant) of water has be en determined from capacitance measurements at frequencies between 0.1 and 10 kHz, in the temperature range from 273.2 to 373.2 K at ambient pressure. The capacitor used for these measurements was formed from s apphire-insulated concentric cylinders. The specific conductance of th e water used was maintained within 20% of the lowest value ever observ ed, which is better than in all previous experiments in this range. Th e new data shed some light on a discrepancy between sets of literature data in liquid water between the triple and boiling points.