Color White is the combination of all colors

Spectrum Sunlight can be split into its component colors Called the color spectrum (Roy G. Biv)  Red  Orange  Yellow  Green  Blue  Indigo  Violet

Spectrum

Black and White White is the presence of all colors of light Black is the absence of any color of light

Color by Reflection Light energy can be absorbed by a surface electrons in the surface atoms vibrate generally some frequencies of light are absorbed while others are reflected this gives color to objects when illuminated by white light The color of the object will depend on the color of the light

Color by Transmission color of a transparent object depends on the color of light it transmits pigments absorb some light and transmit others glass transmits all visible colors a blue glass transmits only blue and absorbs all other color

Sunlight brightest in the yellow green area less bright in red and violet regions

Mixing colored light red + green + blue = white red + green = yellow red + blue = magenta green + blue = cyan additive primary colors  red: lowest frequency  green: middle frequency  blue: highest frequency urceID=11&CFID=822684&CFTOKEN=

Mixing Pigments mixing pigments is different than mixing colored light paints contain small particles of pigments pigments reflect some wavelengths of light and absorb others

Color mixing by subtraction colors can be mixed together to make any color when printed on white paper subtractive primary colors  magenta  yellow  cyan

Blue Sky oxygen and nitrogen molecules scatter light violet and blue light are scattered the most without an atmosphere, the sky would be black clouds (water droplets of broad range of sizes) scatter all visible light making them bright white

Red Sunrise Red is scattered the least Sun must go through more atmosphere at dawn and dusk Red light makes it through the thicker atmosphere at dawn and sunset

Blue water water absorbs infrared light water absorbs some red light in deeper water, no red makes it through without red, light looks greenish blue (cyan) we see this greenish blue color through the clear water

Light fingerprint every element emits a specific group of wavelengths of light called atomic spectra can be used to identify the nature of materials