Visible light and Color
What is an observation? Something you see or notice
Look around the room with the lights on and off…. Light ON Light OFF
What’s the difference? Objects seem brighter and in more color when the light is on. Dark rooms lack color and detail.
What does it mean to be illuminated? An object reflects light
What types of light are there? Incandescent, fluorescent, neon, sodium vapor, tungsten, halogen
What does incandescent mean? WHITE HOT – filament gets hot
What is a filament? A small piece of coil that glows when it gets hot
What does all color depend on? How it reflects and refracts light
You see…. An objects color based on what light it reflects and absorbs
What about Black and white?
Why can’t you see well at night? There is no light to reflect off objects so your cones are not used at night
What about colored light? An object will look different colors based on the color of light because different colors are reflected or reflects into your eye
What is a prism? A triangular shaped translucent object which reflects light
Picture time!
Picture time!
Picture time!
Picture time!
What is Visible light Shorter wavelengths and higher frequencies than infrared… Colors ROYGBIV
Wavelength Red shortest Violet longest