The isotropy or anisotropy in some physical properties of the amorphous poly(ethylene terephthalate) films uniaxially drawn at temperatures above its T g and then quenched to room temperature have been studied.Experimental results here presented show that this amorphous state of high global chain orientation but nearly random segmental orientation

the GOLR state

is nearly isotropic in refractive indices and Young′s modulus for small deformation

while it is very probably anisotropic in thermal conduction and microwave dielectric properties.