Color Light Experiment - Blue, green, and red lights make white light

Color Light Experiment - Blue, green, and red lights make white light
Made for teachers and parents
3 flashlights Blue, Green and Red from Amazon
amzn.to/4bj7yX5
What you need
3 flashlights (Blue, Green and Red)
Paper
Dark room
Chapters
0:14 paper with slit
024 Pencil shadow
0:32 Pencil shadows pass through the slit.
0:42 My hand from a distance
Blue, green, and red lights make white light - Color light experiment
I have 3 flashlight here, blue, green and red. You can see when it goes to my freezer can combine together it makes white light. And if you take a piece a paper with a slit in it you can block those beams of light and separate them back into their original colors or red, green and blue.
Now this is awesome, take a pencil and put it down it will cast a shadow and make 3 colors cyan, a magenta and a yellow shadow. Watch this as when I pass each shadow over the slit they will only block out there original color.
When red, green & blue light are mixed in equal proportions (added together), the 3 primary colors yield white light
When you mix any 2 primary additive colors, you make a primary subtractive color
a. Green + Red = Yellow
b. Green + Blue = Cyan
c. Blue + Red = Magenta
Why do objects appear to have color?
Objects appear a certain color because they absorb (or subtract) all the visible light colors except the color that is reflected back to your eye
1. A red apple absorbs all wavelengths of light except red, which it reflects
2. A blue ball absorbs all wavelengths of light except blue, which it reflects
3. A yellow filter absorbs all wavelengths of light, except yellow, which it transmits.
The primary colors of light are also known as the additive colors, because, when you add these three colors of light (red, green and blue) your brain perceives white light. The primary colors of paints, however, are known as subtractive colors. When you mix the 3 subtractive color paints (cyan, magenta and yellow), you get black.
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