Lub cev hluav taws xob dub yog dab tsi?
Yam uas muaj nyob hauv lub ntiaj teb no yog qhov tsim nyog, thiab qhov uas muaj nyob muaj nws lub ntsiab lus thiab muaj nqis. Tsis tshua pom lub teeb infrared ua tau li cas? Peb tuaj yeem siv infrared raws li cov chaw taws teeb tswj, thiab cov chaw taws teeb sensing tshuab siv cov yam ntxwv ntawm qhov ntev infrared wavelengths, thiab tau kawg, peb xav tham txog qhov ntsuas kub. Yog li cas tus pas ntsuas kub infrared siv infrared ntsuas kub li cas? Ua ntej, cia saib cov hluav taws xob lub cev dub. Koj puas txhais cov khoom dub? Lub cev dub yog qhov ua tau zoo tshaj plaws uas tuaj yeem nqus tau tag nrho cov hluav taws xob hluav taws xob sab nraud yam tsis muaj kev xav lossis kev sib kis. Txhua yam khoom, tsuav yog nws sov dua li xoom xoom, yog hluav taws xob electromagnetic tsis. Electromagnetic nthwv dej yog oscillating particle nthwv dej generated thiab emission nyob rau hauv qhov chaw los ntawm hluav taws xob thiab magnetic teb uas nyob rau hauv tib theem thiab perpendicular rau ib leeg, thiab yog electromagnetic teb uas propagate nyob rau hauv daim ntawv ntawm tsis. Lub cev dub zoo li dub hauv qab 700K, tab sis qhov ntawd tsuas yog vim lub zog hluav taws xob tawm los ntawm lub cev dub hauv qab 700K tsawg heev thiab cov hluav taws xob wavelength nyob sab nraum qhov pom ntau yam. Yog tias qhov kub ntawm lub cev dub siab dua qhov kub siab tshaj, lub cev dub yuav tsis dub ntxiv lawm, nws yuav pib tig liab, thiab thaum kub nce, txiv kab ntxwv, daj, dawb thiab lwm yam xim yuav tshwm sim. Siv cov hlau ua piv txwv, raws li cov txheej txheem ntawm qhov kub thiab txias, nws hloov xim liab, txiv kab ntxwv, thiab daj raws li. Thaum qhov kub siab tshaj 1300 degrees Celsius, nws pib tig dawb thiab xiav. Thaum lub cev dub tig dawb, nws kuj tawm ntau lub teeb ultraviolet.
