radiation and temperature

• What is the main topic of today's video?

  The color appearance of objects
• 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 aren't white and black 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 object's properties
• How does a gas appear blue?

  It reflects blue wavelengths of light and absorbs others
• What are opaque objects?

  Objects that do not transmit any light
• How might a piece of cheese 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 that 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
• How would white paper appear through a green filter?

  It would appear green
• How would a blue object appear through a green filter?

  It would appear black
• What do yellow filters allow to pass through?

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

  Indigo wavelengths, blue, and red wavelengths
• 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 absorb or reflect light.
  • Transparent objects transmit light.
  • Color filters transmit specific wavelengths while absorbing others.
• What are the primary colors of light?

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

  • Transparent: Transmit nearly all light (e.g., glass).
  • Translucent: Transmit some light (e.g., plastic bottle).
• How do color filters work?

  • Filter out specific colors.
  • Allow certain wavelengths to pass through.
  • Primary color filters allow only one primary color.