Electromagnetic Radiation

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Presentation transcript:

Electromagnetic Radiation

E.R. How energy is transferred. (Light) Dual Nature of light Moves in waves, but acts like a particle. photons Wavelength () Speed of light (c) 3.00 x 10 8 m/s Frequency ()= number of cycles per second

R O Y G B I V Types of E.R. electromagnetic spectrum How are frequency and energy related? How are wavelength and frequency related? Directly proportional Inversely proportional

Emission of energy Ground state of an electron: lowest possible energy for an electron Excited state: any state higher than the ground state e- When an electron returns to ground state it emits energy in the form of light. Excited states e- E e- Ground state