20.500.12556/RUL-95223 Absorpcija svetlobe vidnega in UVA dela spektra v vodi diplomsko delo Light absorption from uva to visible part of spectrum in water V diplomskem delu predstavim absorpcijo svetlobe v vodi in povezavo z atenuacijo. V teoretičnem delu opišem fizikalne procese, zaradi katerih molekula vode preide v različna vzbujena stanja - elektronska, vibracijska in rotacijska. Razlog za absorpcijo v UV in vidnem delu spektra elektromagnetnega valovanja so vzbuditve elektronskih stanj. V zvezi s tem predstavim koncept molekulskih orbital, ki je ključen za razumevanje elektronskih nivojev v molekuli. V eksperimentalnem delu diplomske naloge se osredotočim na merjenje padca gostote svetlobnega toka pri valovnih dolžinah λ=633 nm in λ=405 nm ter v UVA delu spektra Sončeve svetlobe v odvisnosti od globine vode. S prilagajanjem krivulje izmerjenim podatkom sem določil koeficient absorpcije in ga primerjal z vrednostmi iz literature. V sklepnem delu diplomskega dela ovrednotim teze, postavljene na začetku dela. The topic of my bachelor’s thesis is absorption of light in water and connection with attenuation. The theoretical part of the thesis comprises physical processes due to which the water molecule turns into different excited states. These are electronic, vibrational and rotational states. The excited electronic states are the reason for absorption in UV and visible part of electromagnetic spectrum. In relation to this, the thesis also includes a concept of molecule orbitals. The concept is essential for understanding of electronic levels in a molecule. The empirical part of the thesis is based on the measurement of light attenuation at wavelengths λ=633 nm and λ=405 nm, and also in the UVA part of the sunlight spectrum in dependence of water depth. The coefficient of absorption was determind by fittiing the curve to measured data and compared with values in literature. Finally, the theses stated at the beginning of my bachelor’s thesis are assessed. absorpcija v vodi molekulska orbitala vzbujena stanja molekule UVA physics fizika true false false [U. Grobljar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-09-19 02:46:29 2017-09-19 12:57:16 2025-04-17 04:53:20 0000-00-00 00:00:00 2017 0 0 29 str., [2] str. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53(043.2) 11711049 Diplomska_naloga_Urh_Grobljar.pdf Diplomska_naloga_Urh_Grobljar.pdf 1 D3B3F7C424191733E2904B2913B01B41 e0eea2f3d26979edd5e9a96d284e7411ce83574798c7dfb1c8c2cf0b8b2c06fa 12dd9d7d-1aaf-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=205698 Pedagoška fakulteta 0 0 0