Visible Light

• What are the two types of reflection discussed?

  Specular and diffuse reflection
• What is specular reflection?

  Reflection on smooth surfaces producing images
• What is diffuse reflection?

  Reflection on rough surfaces scattering light
• What does the angle of reflection equal?

  Angle of incidence
• How does the color of an object depend on light?

  It depends on wavelengths absorbed and reflected
• What happens when white light passes through a prism?

  It splits into a spectrum of colors
• What do colored filters do?

  They absorb specific wavelengths and transmit others
• What color light does a red filter transmit?

  Red light
• What is the difference between transparent and translucent objects?

  Transparent objects allow clear visibility, translucent do not
• What are opaque objects?

  Objects that cannot be seen through
• Why do white objects appear white?

  They reflect all wavelengths of visible light
• Why do black objects appear black?

  They absorb all wavelengths of visible light
• What happens to a red object under white light?

  It reflects red light and absorbs others
• What happens to a blue object under white light?

  It reflects blue light and absorbs others
• What color will a green object appear under a red filter?

  It will appear black
• What is the relationship between light and color perception in objects?

  • Color depends on wavelengths absorbed and reflected
  • White light is a mixture of all colors
  • Objects appear colored based on reflected light
• What are the characteristics of specular and diffuse reflection?

  • Specular Reflection:
  • Occurs on smooth surfaces
  • Produces clear images
  • Diffuse Reflection:
  • Occurs on rough surfaces
  • Scatters light, no clear image
• How do colored filters affect light?

  • Absorb specific wavelengths
  • Transmit other wavelengths
  • Example: Red filter transmits red light
• What determines the appearance of opaque objects?

  • Reflect all wavelengths equally (white)
  • Absorb all wavelengths (black)
  • Reflect specific wavelengths (colored objects)