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Brewster (unit)

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The brewster (B) is a non-SI unit used to measure the susceptibility of a material to photoelasticity, or the value of the stress-optic coefficient of the material. The unit has dimensions reciprocal to those of stress. One brewster is defined to be equal to 10 − 12 {\displaystyle 10^{-12}} square metres per newton (m/N or 1/Pa) or 10 − 13 {\displaystyle 10^{-13}} square centimetres per dyne (cm/dyn). The unit is named after David Brewster, who discovered stress-induced birefringence in 1816.

References

  1. "eFunda: Glossary: Units: Photoelastic Work: Brewster". www.efunda.com. Retrieved 2024-01-03.
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