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Chng 10: C S L THUYT V BC X
10.1 Khi nimcbnvbcxnhit
10.2 Cc nhnghacbncabcxnhit
10.3 Cc nhlutcbncabcxnhit
10.4 Bcxcht kh
10.5 Cngc bi v kt thc
10.6
Hng
dn
t
lc
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10.1 Khi nimcbnvbcxnhit
Trao inhitbcx l hintng trao inhitgiavt pht bcx v vthpthbcxthng qua mi trngtruyn sng int.
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10.2 Cc nhnghacbncabcxnhit
Khi tia sng int mang nnglng Q chiu vo
bmtvt,vtshp thmtphnnng lng (QA)bin thnh ninng,mtphnnng lng (QR) bphn x theo tia phnx v phnnng lng cn li(QD) struyn xuyn qua vt ra mi trng khc theo
tia khc x.
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Phng trnh cn bngnnglngs l:Q = QA+ QR+ QD
Ta gi:
QA/Q l A: hshpthQR/Q l R: hsphnxQD/Q l D: hs xuyn qua
Nu: A = 1: Vtentuyti R = 1: Vttrngtuyti D = 1: Vt trong tuyti
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3.1. nh lut Planck
10.3 Cc nhlutcbncabcxnhit
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3.2. nh lut Stefan-Boltzmann
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3.3. nh lut Kirrchoff
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4.1. c im cht x v bc x cht kh
10.4 Bcxcht kh
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4.2. nh lut buoger v en cht kh
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4.3. Tnh bc x cht kh
