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We know about the four phases of matter: solid, liquid, gas, and plasma. But what about materials that exhibit properties of more than one phase? In 1927, physics professor at the University of Queensland in Australia Thomas Parnell began such an …
It seems natural to see the origin of viscosity in terms of the attractive and repulsive forces between molecules. However, gases have substantial viscosity even though their inter-molecular forces are weak suggesting some other mechanism. …
Some dynamic viscosities of Newtonian fluids are listed below: Gases (at 0 ° C ): viscosity (Pa·s) air 17.4 × 10 -6 hydrogen 8.4 × 10 -6 xenon 21.2 × 10 -6 Liquids (at 20 °C): viscosity …
