Cov yam ntxwv lub cev grey
Qhov kev nqus tau thiab xav txog ntawm lub cev grey hauv qhov pom lub teeb ci yog tas li nyob rau txhua qhov ntev wavelength, uas yog, qhov khoom tsis yog xaiv kev nqus thiab xav txog, xws li cov khoom dub, muaj qhov nqus ntawm 1 (qhov cuam tshuam coefficient yog 0), thiab cov khoom dawb muaj qhov sib cuam tshuam ntawm 1 (Qhov nqus coefficient yog 0), thiab qhov coefficient reflection thiab nqus coefficient ntawm cov khoom grey yog tas li nyob rau hauv txhua lub suab yoj ua ke, yog li lawv tshwm sim ua xim dub lossis dawb lossis txho.