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Published byMitchell Lloyd Modified over 9 years ago
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Electromagnetic Spectrum Light as a Wave
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Learning Objectives Understand the electromagnetic spectrum Understand the relationships between and perform calculations involving wavelength, frequency, and the speed of light Electromagnetic Spectrum
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Electromagnetic radiation – a form of energy that displays characteristics of a wave as it moves through space Light as a Wave
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Waves are characterized by wavelengths and frequencies – Wavelength ( λ ) – the distance between the same points on two successive waves Units of meters (m) – Frequency ( f ) – the number of wave cycles that are completed during a unit of time Units of hertz, Hz, or inverse seconds, s -1 or 1/s Light as a Wave
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Speed of light ( c ) – the speed at which electromagnetic radiation travels – Speed of light is a constant Units of speed of light are meters per second Light as a Wave
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Finding Frequency, Given Wavelength Ex) What is the frequency of electromagnetic radiation whose wavelength is 5.50 × 10 –7 m? IV.Conversions needed? V.Intermediates needed? VI.Solve VII.Does the result make sense? I.Strategy II.Given and unknown III.Formula No. Yes.
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Finding Wavelength, Given Frequency Ex) What is the wavelength of electromagnetic radiation whose frequency is 6.50 × 10 14 Hz? IV.Conversions needed? V.Intermediates needed? VI.Solve VII.Does the result make sense? I.Strategy II.Given and unknown III.Formula No. Yes.
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Learning Objectives Understand the electromagnetic spectrum Understand the relationships between and perform calculations involving wavelength, frequency, and the speed of light Electromagnetic Spectrum
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