• Illustration by Edmond H. Thall, MD.
    File Size: 611 KB
    Related: Diffraction, Optics
    Refractive Mgmt/Intervention

    A, According to the law of rectilinear propagation, light should not change direction after traversing an aperture. B, In reality, apertures do cause light to change direction—a phenomenon called diffraction. C, The smaller the aperture is relative to the wavelength of incident light, the more pronounced is the diffraction.