CHAPTER 2 NOTES.docx - CHAPTER 2 NOTES Electromagnetic...

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CHAPTER 2 NOTES Electromagnetic radiation One of the ways by which energy travels through space Three characteristics Wavelength: (ג) the distance between two peaks or troughs in a wave Frequency: (v) points to the number of waves(cycles) per second that pass a given point in space Speed: (c) light 2.9979 *10 8 m/s Relationship between wavelength and frequency There exists an inverse relationship between and wavelength and frequency The nature of waves Visible Spectrum Red has the biggest wavelength but smallest frequency Blue has the smallest wavelength but largest frequency
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Introduction to atomic model Niels Bohr and Max Planck discovered quanta Being told that you can only drive at car at 30mph or 70mph but never anything between is exactly how electrons work inside atoms Max Planck disocovered that energy can be gained or lost only in whole- number multiples of hv Planck’s constant is 6.626x10 -34 J or kgm -2 /s
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