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How big or small Waldo and all of the other silicon creatures are is often a very good indication of the technological proficiency , power , and speed of the computer chip into which they are stashed . Starting with the nature of electromagnetic radiation , a wide variety of topics are covered in this section , including refraction , reflection , diffraction , interference , birefringence , polarization , primary colors , human vision , mirrors , prisms , beamsplitters , laser systems , geometrical optics , filtration , color temperature , and the speed of light . On behalf of the Air Force Association and our affiliate the Aerospace Education Foundation , I want to thank you for joining us for this important dialog about " Global Engagement and our United States Air Force . The Battle of Britain shows what happens when one side has better information . In particular , the members of the U.S. Mission to the OSCE made interventions regarding freedom of assembly , movement , religious and media freedom , and the failure of the government of Turkmenistan to provide legal remedies for human rights violations , as did the OSCE 's Rapporteur on Turkmenistan , Emmanuel Decaux . A great historical example comes from the use of radar in the Battle of Britain . Astigmatism - Astigmatism aberrations are similar to comatic aberrations , however these artifacts are not as sensitive to aperture size and depend more strongly on the oblique angle of the light beam .