Shattered music cassette

Shattered music cassette

T515/0068

Rights Managed

Caption

The shattered plastic casing of a music tape cassette, showing the reel of magnetic tape contained within. When photographed through cross polarised light, coloured patterns are visible which correspond to stress areas in the plastic casing; areas of similar colour correspond to regions under a similar degree of stress. This phenomenon, known as photoelasticity, is used to predict stress forces in real objects, eg during the design of a motor vehicle axle. Transparent plastic models with loads proportional to those in the real object are made to determine the stress distribution.

Release details

Model release not required. Property release not required.

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