Introduction to Physics I

For Biologists, Geoscientists, & Pharmaceutical Scientists

L13, 02.11.2017

Mechanical Properties of Liquids

• Properties of liquids, surface tension; hydrostatics; surface tension, capillary forces.

• Pressure in fluids; hydrodynamics; continuity equation.

• Viscosity; laminar flow; turbulence.

buoyancy, Archimedes principle

Tipler

surface tension

water strider (Gerris)

Carnegie-Mellon Univ.

Marchand et al., Am. J. Phys., 79(10), Oct. 2011

liquid

vapor

Fig. 1. Sketch showing the missing intermolecular bonds close to the liquid-vapor interface, giving rise to an increase in the free energy per unit area, that is, the surface tension.

adhesion / cohesion

Trautwein

hydrodynamics

basics of the description of fluids in motion

Daniel Bernoulli (CH)1700-1782

Leonhard Euler1755-1825

Euler-Laterne während der Basler Fasnacht 2008

hydrodynamics

hydrodynamics

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