1) The document discusses color subtraction and how the color an object appears depends on what wavelengths of light it reflects and absorbs. 2) It provides examples of how different colored lights will interact with objects of various colors, such as a red object appearing red when hit with magenta light since it reflects the red wavelength. 3) The document also discusses how primary subtractive colors of magenta, yellow, and cyan are created and how mixing them in different combinations, such as cyan and yellow, results in the color green since green is the only wavelength not absorbed.

1. Color Subtraction Notes<br />The reason you see an object a certain color is because you see that color light or a combination of lights coming from that object. It will reflect certain colors and absorb the others. For example, a red object looks red because it reflects red and absorbs green and blue. A magenta object looks magenta because it reflects red and blue and absorbs green.<br />What color does a red object look with a magenta light shined on it?<br />Red reflects red and absorbs green and blue. Magenta light is made up of red and blue light. So the red object will reflect the red light and absorb the blue. Because the red light gets to you eye you see it as RED.<br />What color does a cyan object look with a magenta light shined on it?<br />Cyan reflects green and blue and absorbs red. So the object will absorb the red from the magenta and reflect the blue so the object will looks BLUE.<br />What color does a yellow object with red light shined on it?<br />Yellow reflects green and red and absorbs blue. So the yellow object will reflect the red light shined on it, so it will look RED.<br />What color does a blue object look with a yellow light shined on it?<br />NOTHINGBlue objects reflect blue light and absorb red and green. Yellow light consists of red and green light. The red and green will get absorbed and nothing will get reflected so it will look BLACK.<br />Mixing Paint/Printing<br />Primary Colors of Subtraction<br />Magenta reflects red and blue and absorbs green<br />Yellow reflects red and green and absorbs blue<br />Cyan reflects green and blue and absorbs red<br />What color do you get if you mix cyan and yellow?<br />Cyan is going to reflect blue and green and absorb red.<br />Yellow is going to reflect red and green and absorb blue.<br />The only color that does not get absorbed is green so you just made GREEN<br />G<br />RGB<br />yellowcyanThe only color not cancelled is GREEN<br />What color do you get if you mix green and magenta?<br />Green is going to reflect green and absorb red and blue.<br />Magenta is going to reflect red and blue and absorb green.<br />All colors get absorbed so you are left with BLACK.<br />