4/19/06 Spectra: Continuous vs. Discrete Friday’s Reading: Section 14.3: Lasers and LEDs (pp. 464 – 470) Upcoming Reading Assignments: Section 15.1: Cameras.

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4/19/06 Spectra: Continuous vs. Discrete Friday’s Reading: Section 14.3: Lasers and LEDs (pp. 464 – 470) Upcoming Reading Assignments: Section 15.1: Cameras (pp. 478 – 488) Section 15.2: Optical Recording and Communication (pp. 489 – 497)

Visible light portion of EM spectrum Sunlight & Blackbody Radiation

Exercise: Wavelength, Frequency, Energy of Light Consider visible light from the violet end of the spectrum. This light has wavelength 400 nm. Calculate the following: Frequency:Energy:

Continuous vs. Discrete Spectra

How do we get Discrete Spectra?