Dab tsi yog qhov cuam tshuam ntawm emissivity rau qhov tseeb ntawm infrared ntsuas kub?
Peb paub tias thaum twg ib yam khoom nyob rau saum toj kawg nkaus xoom (-273.15 degree), infrared zog, uas yog, infrared rays, yuav tawm ntawm qhov chaw ntawm cov khoom. Qhov kub siab dua, lub zog infrared muaj zog dua! Infrared thermometers thiab infrared thermal imaging koob yees duab ntsuas qhov kub ntawm qhov chaw ntawm cov khoom raws li tus yam ntxwv no. Txij li thaum peb paub tias infrared thermometers thiab infrared thermal imaging koob yees duab ntsuas qhov kub ntawm qhov chaw ntawm cov khoom, nws yuav inevitably raug cuam tshuam los ntawm smoothness ntawm qhov chaw ntawm cov khoom. Qhov kev sim ua pov thawj tias qhov ze ntawm qhov chaw ntawm cov khoom yog rau daim iav nto (qhov muaj zog dua qhov kev xav), qhov muaj zog ntawm lub zog infrared tawm los ntawm qhov chaw, yog li peb yuav tsum tau them nyiaj rau qhov attenuation ntawm lub zog infrared ntawm qhov chaw. ntawm cov khoom sib txawv, uas yog Teem ib qho kev them nyiaj coefficient, qhov nyiaj npib coefficient yog emissivity!
