visible light and color

• What is visible light made up of?

  A spectrum of different colors
• Which color has the longest wavelength?

  Red
• Which color has the shortest wavelength?

  Violet
• What acronym can help remember the order of colors in the visible spectrum?

  ROY G BIV
• Why are white and black not considered colors in the spectrum?

  White is a combination of all wavelengths, and black is the absence of light
• What determines the color an object appears?

  The wavelengths of light hitting it and the properties of the object
• What are opaque objects?

  Objects that do not transmit any light
• Why does the gas appear blue?

  It reflects blue wavelengths of light and absorbs others
• How can an object appear yellow?

  By reflecting yellow wavelengths or a combination of red and green wavelengths
• What is the difference between transparent and translucent objects?

  Transparent objects transmit nearly all light, while translucent objects transmit some light
• What is an example of a transparent object?

  Glass in windows
• How does the color of a translucent object like a plastic bottle appear green?

  Because it transmits green wavelengths while absorbing others
• What do color filters do?

  They filter out particular colors so only certain wavelengths can pass through
• What is a primary color filter?

  A filter that only allows one of the three primary colors to be transmitted
• What happens when white light passes through a green filter?

  Only the green wavelength gets through
• Why does white paper appear green when viewed through a green filter?

  Because only the reflected green waves make it through
• What happens to a blue object viewed through a green filter?

  It appears black because the filter blocks blue light
• What do yellow filters allow to pass through?

  Yellow light and the wavelengths of red and green
• What do indigo filters allow to pass through?

  Indigo wavelengths and the wavelengths of blue and red
• What are the key concepts related to how objects appear in color?

  • Visible light is a spectrum of colors.
  • Color appearance depends on light wavelengths and object properties.
  • Opaque objects reflect or absorb light.
  • Transparent objects transmit light.
  • Color filters transmit specific wavelengths while absorbing others.
• What are the primary colors of light?

  • Red
  • Green
  • Blue
• How do color filters work?

  • They allow certain wavelengths to pass through.
  • They absorb other wavelengths.
  • Primary color filters transmit one primary color.