Infrared thermometer dub lub cev hluav taws xob txoj cai: Lub cev dub yog lub tshuab hluav taws xob zoo tshaj plaws, uas nqus cov hluav taws xob hluav taws xob ntawm txhua lub wavelengths, tsis muaj kev xav thiab kev xa tawm ntawm lub zog, thiab muaj emissivity ntawm 1 ntawm nws qhov chaw. Nws yuav tsum tau taw qhia tias tsis muaj lub cev dub tiag tiag hauv qhov xwm txheej, tab sis txhawm rau ua kom pom tseeb thiab tau txais txoj cai faib tawm ntawm cov hluav taws xob infrared, tus qauv tsim nyog yuav tsum tau xaiv hauv kev tshawb fawb theoretical, uas yog tus qauv oscillator quantized ntawm lub cev kab noj hniav hluav taws xob tau npaj tseg. los ntawm Planck, uas ua rau Planck txoj cai ntawm dub-lub cev hluav taws xob, uas yog, lub cev dub-lub cev spectral radiance qhia nyob rau hauv wavelength, yog qhov pib ntawm tag nrho cov infrared radiation theories, yog li nws yog hu ua txoj cai dub-lub cev hluav taws xob.
