ErrorProp prismRI = new ErrorProp(super.prismRefractiveIndex, 0.0D);
ErrorProp airRI = new ErrorProp(RefractiveIndex.air(super.wavelength), 0.0D);
ErrorProp phi = new ErrorProp();
ErrorProp angle = new ErrorProp();
for(int i=0; i<this.numberOfTEmeasurementsPrism; i++){
angle.reset(this.anglesRadTE[i], this.errorsRadTE[i]);
phi = (angle.over(prismRI)).times(airRI);
phi = ErrorProp.asin(phi);
phi = alpha.plus(phi);
phi = prismRI.times(ErrorProp.sin(phi));
this.effectiveRefractiveIndicesTE[i] = phi.getValue();