Colors and Electromagnetic Waves Bands of Electromagnetic Wave
Colors and Electromagnetic Waves
Bands of Electromagnetic Wave 3
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Types of Spectra 5
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Cosmic Microwave Background Discovered in 1964 by Arno Penzias and Robert Wilson in Bell Laboratory. (1978 Nobel Prize) Smooth with very small variation 10
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Antimatter Predicted by Dirac (1928) 22
Nobel Prizes • • Planck 1918 Einstein 1921 Bohr 1922 De Broglie 1929 Heisenberg 1932 Schrodinger, Dirac 1933 Pauli 1945 Born 1954 24
Schrödinger’s Cat 25
The Double Slit Experiment 26
The Fifth Solvay Conference (1927) in Brussels On electrons and photons 27
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Particle in a Box with Infinitely High Potential Walls 29
Energy Levels and Waves for a Particle in a One-Dimensional Box 30
Physical Meaning of a Wave Function • The square of the function indicates the probability of finding an electron near a particular point in space. 31
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Hydrogen 1 s Wave Function 33
Radial Probability Distribution 34
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Orbitals Filled for Elements in Various Parts of Periodic Table 37
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Two Spin States of a Proton in a Large Magnetic Field
A Patient in an MRI Machine An MRI Brain Scan Alfred Pasieka/SPL #PRInc-E 01694
Nuclear Spin and MRI Isotope Natural % Abundance Spin (I) 1 H 99. 9844 1/2 2 H 0. 0156 1 11 B 81. 17 3/2 13 C 1. 108 1/2 17 O 0. 037 5/2 19 F 100. 0 1/2 29 Si 4. 700 1/2 31 P 100. 0 1/2 41
The Hydrogen 21 cm line 42
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