Imitha ye-infrared

Imitha ye-infrared [comp. ye -infra - (ukusuka kwisiLatini, ezantsi) kunye nobomvu ( ukuphindaphinda kokukhanya okubomvu)] , isoloko ishunqulelwa kwi -IR kwaye ikwabizwa ngokuba yi -thermal radiation, kwifiziksi ithathwa njengemitha ye- electromagnetic spectrum. phakathi kweemayikhroweyiva kunye nokukhanya okubonakalayo, okugquma ibhanti yokuphindaphinda ukusuka malunga ne-3∙ 1011 ukuya kwi-4∙ 1014 Hz (eyandisiweyo ~ 10 1/2 octaves, kanye njengesandi somsindo, kwi -acoustics), ngobude obuhlukeneyo d 'maza ukusuka malunga. 1 mm ukuya kuma-700 nm (0.7 µm). I -spectrum ye-infrared iye yahlulahlulwe yangamacandelo amane (okanye amasimi), athiywe ngokubhekiselele "kumgama" ukusuka kwimitha ebomvu ebonakalayo, efana ne-infrared (ukusuka kwi-0.7 ukuya kwi-10) µm), i. phakathi (10 ukuya ku-50 μ m), i. kude (50 ukuba 300 μ m) kwaye i. kakhulu (ukusuka kwi-300 μm ukuya kwi-1 mm). 

Njenge "radiation thermal", ihlala inxulunyaniswa neengqikelelo "ubushushu", kuba yonke into eneqondo lobushushu elingaphezulu kunoziro opheleleyo (ukwenza nayiphi na into yokwenyani) ngokuzenzekelayo ikhupha umyinge ongeyo-zero wemitha ye-infrared (ngenxa yomthetho weWien) . , ukwandisa ubushushu, i-peak yokukhutshwa iguquka ngokunyuka ngokubonakalayo kude kube yinto ibe yi-incandescent).