PH 122 Lecture Notes - Uncertainty Principle, Matter Wave, Watasenia Scintillans
Document Summary
Light of wavelength 400 nm illuminates a potassium electrode (work function 2. 3 ev) 3. 1 ev 2. 3 ev = 0. 8 ev. Ocean water is most transparent at wavelengths of 470 nm, so bioluminescent creatures emit light at approximately this wavelength. Firefly squid use atp to provide the energy for this reaction. Metabolizing one molecule of atp releases 0. 32 ev. Electrons are accelerated from rest through an 8000 v potential difference. K = mv2 h p = h mv. Electrons of the bonds along the chain of carbon atoms in a dye molecule (l = 0. 85 nm) are shared among the atoms in the chain, but are repelled by the nitrogen-containing rings at the end of the china. What is the longest wavelength of visible light this molecule will absorb? n2 = 0. 52 ev. 8m l2 n = 1: 0. 52 ev n = 2: 2. 08 ev n = 3: 4. 68 ev. 2. 08 ev 0. 52 ev = 1. 56 ev 794 nm.
