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Spannungsoptik f
construct.	photoelasticity method; optical method of stress analysis; photoelastic method of stress determination
earth.sc.	optics of stress and strain; photoelasticimetry
el.	optostrain; optostress
mech.	optical polarizing method
met.	photoelasticity
mining.	photoelastic stress analysis
opt.	photoelasticity (optical method of stress analysis)