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COLORCOLOR. COLORCOLOR Why do I see all those pretty colors?

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Presentation on theme: "COLORCOLOR. COLORCOLOR Why do I see all those pretty colors?"— Presentation transcript:

1 COLORCOLOR

2 COLORCOLOR Why do I see all those pretty colors?

3 Electromagnetic spectrum:

4 Color wavelengths: Red: 650 nm meters

5 Color wavelengths: Red: 650 nm Orange: 590 nm meters

6 Color wavelengths: Red: 650 nm Orange: 590 nm meters meters

7 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm meters meters

8 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm meters meters meters

9 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm meters meters meters

10 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm meters meters meters meters

11 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm meters meters meters meters

12 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm meters meters meters meters meters

13 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm Indigo: 445 nm meters meters meters meters meters

14 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm Indigo: 445 nm meters meters meters meters meters meters

15 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm Indigo: 445 nm Violet: 400 nm meters meters meters meters meters meters

16 Color wavelengths: Red: 650 nm Orange: 590 nm Yellow: 570 nm Green: 510 nm Blue: 475 nm Indigo: 445 nm Violet: 400 nm meters meters meters meters meters meters meters

17 Why do I see certain colors? White:

18 Why do I see certain colors? White: Objects that appear to be white reflect all portions of the energy frequencies of visible light.

19 Why do I see certain colors? White: Objects that appear to be white reflect all portions of the energy frequencies of visible light.

20 Why do I see certain colors? White: Objects that appear to be white reflect all portions of the energy frequencies of visible light.

21 Why do I see certain colors? Black:

22 Why do I see certain colors? Black: Objects that appear to be black absorb all portions of the energy frequencies of visible light.

23 Why do I see certain colors? Black: Objects that appear to be black absorb all portions of the energy frequencies of visible light.

24 Why do I see certain colors? Black: Objects that appear to be black absorb all portions of the energy frequencies of visible light.

25 Why do I see certain colors? Grey:

26 Why do I see certain colors? Grey: Objects that appear to be grey absorb and reflect equal percentages of all portions of the energy frequencies of visible light.

27 Why do I see certain colors? Grey: Objects that appear to be grey absorb and reflect equal percentages of all portions of the energy frequencies of visible light.

28 Why do I see certain colors? Other colors:

29 Why do I see certain colors? Other colors: Objects that appear to be a color reflect the color / colors you see and absorb all other colors.

30 Why do I see certain colors? Other colors: Objects that appear to be a color reflect the color / colors you see and absorb all other colors.

31 Primary Colors:

32 Primary Colors of Light: Red Green Blue

33 Primary Colors: Red Green Blue When all three are combined equally they make white light.

34 Primary Colors: Red Green Blue When all three are combined equally they make white light. When two are combined equally they make a secondary color.

35 Secondary Colors:

36 Yellow (red + green) Cyan (green + blue) Magenta (red + blue)

37 Secondary Colors: Yellow (red + green) Cyan (green + blue) Magenta (red + blue) Any two colors that combine to form white light are called complementary colors.

38 Secondary Colors: Yellow (red + green) Cyan (green + blue) Magenta (red + blue) Any two colors that combine to form white light are called complementary colors. (yellow and blue / cyan and red / magenta and green)

39

40 Pigments:

41 Pigments are substances that are used to color other materials.

42 Pigments: Pigments are substances that are used to color other materials. The primary colors of pigments are cyan, yellow, and magenta.

43 Prisms :What is happening?

44 White light enters a prism its speed is changed.

45 Prisms :What is happening? White light enters a prism its speed is changed. Each wavelength is effected differently.

46 Prisms :What is happening? White light enters a prism its speed is changed. Each wavelength is effected differently. The longer the wavelength the less bending there will be.

47 Prisms :What is happening? White light enters a prism its speed is changed. Each wavelength is effected differently. The longer the wavelength the less bending there will be. The shorter the wavelength the more bending there will be.

48 Prisms:

49 Lenses and mirrors:

50 Convex:

51 Lenses and mirrors: Convex: curved or rounded outwardly (like the surface of a globe).

52 Lenses and mirrors: Convex: curved or rounded outwardly (like the surface of a globe). Concave:

53 Lenses and mirrors: Convex: curved or rounded outwardly (like the surface of a globe). Concave: curved or rounded inwardly (like the inside of a bowl).

54 Lenses: How do they work? Lens Transparent piece of glass or plastic that refracts light in a predictable way

55 Diverging/Concave lens A concave lens causes light to diverge, or spread out, making a smaller image

56 Convex lens A convex lens causes light to converge, or focus, the type of image formed by a convex lens depends on the position of the object in relation to the focal point. Notice, that was what up is down and what was down is up after the focal point

57 Essential Knowledge, Skills, and Processes Identify some common optical tools, and describe whether each has lenses, mirrors, and/or prisms in it. These should include: eyeglasses flashlights cameras binoculars microscopes

58 Essential Knowledge, Skills, and Processes Eyeglasses: have lenses c. Hyperopia (farsightedness) a. Normal eye b. Myopia (nearsightedness) Corrected with concave lens Corrected with convex lens No correction needed

59 Essential Knowledge, Skills, and Processes Flashlight: has lenses and a mirror

60 Essential Knowledge, Skills, and Processes Cameras: have lenses, mirrors, and a prism

61 Essential Knowledge, Skills, and Processes Binoculars: have lenses and prisms

62 Essential Knowledge, Skills, and Processes Microscope: has lenses

63 How have humans used science to engineer technologies that use electromagnetic energy? 1. Use of lasers Laser: Powerful energy of light due to concentrating one wavelength (frequency)(color) of light All energy is lined up

64 Lasers On “same wavelength” In sync with one another (laser) Flashlight

65 Lasers Uses: Fiber optics Surgery UPC codes Burning and reading CD’s, DVD’s & optical flash drives


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