Surfaces

Getting under the skin of surface tension, friction and lubrication.

After defining ‘surfaces’, Bragg describes the surface properties of liquid. A series of experiments show what is meant by surface tension and vividly demonstrate how it may be controlled and modified. Bragg then describes the basic laws of friction, illustrating the effect of molecular surface layers in reducing friction and demonstrating the principles of lubrication with the aid of models.

 

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