Why Poisson Ratio Is Higher In, Rubber/steel/wood?

Why Poisson Ratio Is Higher In, Rubber/steel/wood?
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Answer :

When a material is compressed in one direction, it usuallytends to expand in the other two directions perpendicular tothe direction of compression. This phenomenon is called the Poisson effect. Poisson’s ratio is a measure of the Poisson effect.
For rubber = 0.5
For steel = 0.288
For wood < 0.2
Thus Poisson’s ratio is higher in RUBBER.
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