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Tag Archives: wavelengths

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Wave Nature of Light: Diffraction of CDs & DVDs Lab Answers

ScienceBy William Anderson (Schoolworkhelper Editorial Team)February 7, 2011Leave a comment

Abstract Using the formula λ = ∆x L / d, we will determine the wavelength of a red laser to be 641nm. Using this information we will then determine the track spacing for a CD and DVD. We calculate the track spacing for the CD to be 1.5 μm and the track spacing for the…

A Closer Look at Light

ScienceBy William Anderson (Schoolworkhelper Editorial Team)September 21, 2010Leave a comment

*Astronomers analyze light from objects in space in order to learn about the composition and movement of the objects. After today’s lecture, you should be able to: –    Describe the characteristics of electromagnetic radiation. –    Explain ways of analyzing light in order to get information about stars. –    Explain the Doppler Effect and how it…

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