Diffraction

# Diffraction - Chrissy Henderson Physics Lab 4 Section 7 Wed...

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Chrissy Henderson Physics Lab 4 Section 7, Wed. 12:20 7 April 2005

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I. Objective The purpose of Lab 4 is to investigate the diffraction of light. Light, by definition, is a particle as well as a wave. For this lab, we will define light’s behavior as a wave. We will be looking at the super positioning of two waves over one another, including the properties of interference and destructive interference. Finally, we will examine the characteristics of diffraction with a monochromatic light, i.e. a laser. Post-lab calculations include finding the width of a slit by a sinθ=λ, finding the wavelength using the equation λ=dy/L, and calculating the wavelength of diffraction gradient by λ=yd/2L. The percent errors will then be calculated. II. Observations / Data A. Exp. II.B. - Disks a. Observe center transparent and opaque disks. i. Transparent: Bright ii. Opaque: Bright b. Light is observed as being bright because of constructive interference, where crests of the wave coincide with one another, reinforcing the
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Diffraction - Chrissy Henderson Physics Lab 4 Section 7 Wed...

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