. 1/299,792 ,45 8 of a second. Mass When the metric system was created, the kilogram was defined as the mass of 1 cubic decimeter of pure water at the temperature of its maximum density (4. 0° C/39.2°. This (3) bridge in Washington State, collapsed in a mild gale on 1 July 1 940 . The wind set up oscillating around the (4) which vibrated more and more violently until it broke up under the (5). been needed to explain all observable spectral phenomenon. (Microsoft Corporation) 54 1. What was the aim of the 11th General Conference on Weight and Measurement, held in Paris...