PHY 2054 Lecture Notes - Lecture 15: Sewing Needle, Physical Optics, Wind Wave
Document Summary
The light waves passing this sewing needle are slightly bent or diffracted, causing the bands. Diffraction occurs when the light passing through a narrow slit or a. Particles traveling in straight lines or like a waves (like water waves) Light exhibits behavior that is not like wave or particle like. Wave model it shows that the light has wave. Wave optics the study of light as a wave. Ray model shows that the light travels in a straight line. Diffraction various phenomena which occur when a wave encounters an obstacle or a slit. A clear sign that a wave is passing through an opening is that it is a diffraction. When the opening is many times larger than the wavelength of the wave the wave continues to move straight forward. Whether a wave spreads out (diffracts) or travels straight ahead with sharp shadows on either side depends on the size of the objects that the wave interacts with.
