lec14_r - F = frequency (1/sec or Hertz (Hz)) C = W * F...

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1 ES 2 W09 Lec #14: Electromagnetic Radiation “EMR” Reading: (K&B p 146-147; SR: APS 2007_E&M fields) • Dialogue on the scientific method • EMR energy • EMR spectrum -Types of EMR -Ionizing EMR (health issues) Remote sensing applications -Desertification, ice sheets & pollution -Land use -Test Thermal EMR (Seeing energy waste with thermograms) Math Analysis Numerical Models Hypotheses Dialogue on the Scientific Method
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2 Math Analysis Numerical Models Hypotheses Thematic Content Dialogue on the Scientific Method C = speed of light = 3 x 10 8 (m/sec) W = wavelength (m) F = frequency (1/sec or Hertz (Hz)) C = W * F
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3 E = EMR energy (Joules) = h * F where h = 6.6 x 10 -34 (Joule-sec) h is called Planck’s constant Since C = W * F, E = h * C/ W
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4 C = speed of light = 3 x 10 8 (m/sec) W = wavelength (m)
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Unformatted text preview: F = frequency (1/sec or Hertz (Hz)) C = W * F wavelength units: micron ( m) = 10-6 meters nanometer ( m) = 10-9 meters 5 EMR Guide Lines 1. W avelength and F requency are inversely related. 2. EMR energy is directly proportional to F or inversely to W . 3. Ionizing EMR occurs at W < visible. 4. All bodies radiate thermal EMR. ES 2 W09 Lec #14: Electromagnetic Radiation EMR Reading: (K&B p 146-147; SR: APS 2007_E&M fields) Dialogue on the scientific method Wavelength & frequency EMR energy EMR spectrum-Types of EMR -Ionizing EMR (health issues) Guide Lines & Summary Remote sensing applications-Desertification, ice sheets & pollution-Land use-Test Thermal EMR (Seeing energy waste with thermograms) 6 7 8 9 10 11 12 Deceptions of the senses are the truths of perceptions Johannes Purkinje 19 th century 13 14 15...
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lec14_r - F = frequency (1/sec or Hertz (Hz)) C = W * F...

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