Advanced Facilities Efficient ProductionLub teeb yog hais txog ib pawg me me ntawm ntau zaus pom tau pom tau rau tib neeg lub qhov muag ntawm cov hluav taws xob hluav taws xob loj (EM). Feem ntau EM vuag oscillate ntawm tus nqi uas tib neeg tsis tuaj yeem tshawb pom tsis pom kev. Qhov no yuav muab piv nrog tus xuav dev nrog lub suab uas tib neeg pob ntseg tsis hnov. Tib txoj kev, qee cov tsiaj tuaj yeem pom EM ua ntau zaus uas tib neeg tsis tuaj yeem pom. Muv, piv txwv, pom nyob rau hauv chav dhau xim daj (UV) kom xaiv cov qauv hauv cov paj tsuas pom ntawm UV-pom lub zeem muag.
EM hluav taws xob yog hluav taws xob teb nrog cov khoom sib nqus uas nthuav tawm los ntawm ib tus taw tes mus rau lwm qhov, lossis hluav taws xob sab nraud. Cov hluav taws xob EM yog nthwv dej nrog ntau zaus thiab ntau yam. Zaus txhais tau hais tias nthwv dej ntau hla qhov chaw taw tes rau ib pliag li cas, thaum ntwm ntsuas ntog qhov siab ntawm nthwv dej. Lub teeb pom kev ua haujlwm tau nthwv dej ntawm 400 txog 700 nanometers. Txhawm rau muab qhov no tso rau hauv kev pom, lub nanometer yog ib ntawm ib lab (meter) ib (thib ib lab ntawm 3.281 taw).
Lub teeb muaj cov khoom sib txawv nyob ntawm nws qhov ntau thiab yoj. Cov vuag ntev dua, lossis qis dua zaus, ua rau lub teeb liab, thaum nthwv dej luv, lossis ntau dua zaus, ua rau xiav. Liab yog ntawm ib qho kawg ntawm qhov pom pom, thaum xiav lossis violet lub teeb nyob ntawm lwm. Tsuas yog dhau ntawm xiav / violet spectrum yog ultra-luv vuag hu ua ultra-violet. Qhov no tsuas yog-pom thiab ze-pom lub teeb tseem hu ua High Energy Ultra Violet (HEV) teeb.
Ntawm qhov kawg ntawm lub teeb xiav xiav, feem ntau ntawm hluav taws xob ua rau tsis pom kev, ua rau lub teeb tsaus violet, tseem hu ua lub teeb dub. Lub ntsej muag ntev no muaj cov khoom uas nthuav tawm hauv qee cov xim muaj peev xwm nqus tau cov hluav taws xob ntxiv uas tsis tuaj yeem pom, ua rau cov xim no rov cuam tshuam lub zog thiab ci. Ib qho piv txwv yog daim ntawv tshaj xov xwm dub. Cov xov hluav taws xob luv luv tsim tawm lub teeb dub uas siv hauv kev ua txhaum cai lij choj los txhawm rau cov kua hauv lub cev xws li zis thiab ntshav. Tshaj dhau UV hluav taws xob nyob rau EM nplai yog x-ray thiab gamma rays. Cosmic rays, thaum suav nrog, poob ntawm no; txawm hais tias ntau tus kws tshawb fawb ntseeg cosmic rays tsis thev naus laus zis hauv EM spectrum.
Qhov rov qab kawg ntawm lub tsom iav pom mus dhau liab mus rau infrared. Infra yog Latin rau "hauv qab no," yog li infrared cia txhais tau tias "hauv qab liab." Lub teeb pom kev zoo siv rau kev pom lub koob yees duab hmo ntuj thiab lub ntsej muag thermal. Hauv cov txheej txheem nthwv dej no, cov khoom sov sov pom kev ci ntsa iab dua li cov khoom txias. Infrared tseem siv rau luv-ntau network ntawm lub computer peripherals nrog cov ntaub ntawv Infrared Association (IrDA) tshwj xeeb. Raws li nthwv dej txuas ntxiv mus ntev dua, peb mus txog microwaves, ua raws cov xov tooj cua vuag, thiab thaum kawg, lub suab nrov tshaj tawm.
Txawm hais tias lub teeb feem ntau piav raws li nthwv dej, nws muaj ob qhov xwm yeem raws li quantum physics. Physics piav qhia txog lub teeb ua duab yees, lossis lub zog ua kom lub zog loj uas tuaj yeem coj zoo li nthwv dej. Txawm yoj, tawg, lossis tshee tshee “txoj hlua,” raws li lub tswv yim kev ntseeg qhia tias, lub tshuab nqus hluav taws xob EM txav ntawm qhov ceev ntawm 186,282 mais ntawm thib ob, lossis 299,792,458 meters ib pliag. Ib lub teeb xyoo yog vim li ntawd qhov kev ncua deb uas lub teeb tuaj yeem tuaj yeem nyob rau hauv ib xyoos. Lub hnub qub ze tshaj plaws, Alpha Centauri, yog plaub xyoos teeb.