"Color of Objects" Light Phenomenon PPT Courseware 2 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Color of Objects" Light... | 16500次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Color of Objects" Light Phenomenon PPT Courseware 2 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Color of Objects" Light Phenomenon PPT Courseware 2, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Color of Objects" Light Phenomenon PPT Courseware 2
Review and consolidate:
1.Law of reflection of light
2. The law of refraction of light
3. Characteristics of plane mirror imaging
4. The difference between real image and virtual image
directional signs
1. Understand the phenomenon of dispersion and know that the three primary colors of light and the three primary colors of pigments are different
2. Explore the mixing of shades and pigments
3. Understand the relationship between the color and light of objects 1
Self-study guide:
Read the textbook and answer the following questions:
1. Who invented the dispersion of light and what are the main experimental instruments used?
2. What is the phenomenon after sunlight occurs?
3. What are the three primary colors of light?
4. What determines the colors of transparent objects and opaque objects?
1. Dispersion
The light from the sun illuminates the earth and makes all things shine. Before the 17th century, people always believed that white was the simplest color. It wasn't until 1666 that the British physicist Isaac Newton used a glass prism to disperse the sun, and the mystery of the color of light was revealed.
Let a beam of sunlight shine on a prism. What happens to the light emerging from the prism?
Red light in sunlight has the smallest deflection, while violet light has the largest deflection.
in conclusion
Sunlight (white light) is not monochromatic light, but is a mixture of various colored lights.
concept
After sunlight passes through a prism, it is decomposed into light of various colors. This phenomenon is called dispersion of light.
Sunlight (white light) is a mixture of seven monochromatic lights: red, orange, yellow, green, blue, indigo, and violet.
2. Mixing of colors and lights
Red, green, and blue are called the three primary colors of light. Different colors can be mixed by using these three kinds of light.
What color will it be if you mix any two colors of red, green and blue?
red + green = yellow
red + blue = magenta
Green + blue = cyan (indigo)
red+green+blue=white
3. Color of object
We know the dispersion of light, so why do objects have various colors?
(1) Color of transparent objects
The color of a transparent object is determined by the colored light passing through it.
practise
Red cellophane can only pass _____ light
Green cellophane can only pass _____ light
Blue cellophane can only pass _____ light
(2) Color of opaque objects
The color of an opaque object is determined by the colored light it reflects;
An opaque object can only reflect light of its own color.
Stick the green paper on the white screen so that only the areas on the screen illuminated by green light are bright.
(3) The three primary colors of pigments are magenta, yellow, and cyan.
They can produce different colors in different proportions.
magenta+�=red
�+blue=green
Magenta + Yellow + Blue = Black
When painting, you can create most colors by using the three primary colors.
Consolidation exercises
1. After sunlight passes through a prism, it will be decomposed into light of various colors. If a white screen is used to receive it, the order of colors on the white screen is red, _____, _____, ______, ______, ______, _____. this means________________.
2. The color of a color TV is produced by the electron gun in the TV shooting onto the phosphor on the inside of the screen. According to the mixing rules of color light, only three colors of electron guns, ______, ______, and _______, are needed in the TV. Can be matched with a variety of brilliant colors.
Exercise: 1. The color of a colored transparent object is determined by its _____, and the color of a colored opaque object is determined by its _____.
2. The color of an object that can absorb all colors of light is _____.
3. The color of an object that can reflect light of various colors is: ( )
A. White. B. Colorless.
C. Black. D. This color does not exist.
4. When a beam of light shines on a piece of paper and the paper appears red, then the relationship between this beam of light and the paper is: ( )
A. Red light, white paper B. White light, red paper
C. Red light, red paper D. The above situations are possible.
Keywords: light phenomenon teaching courseware, object color teaching courseware, Beijing Normal University version eighth grade physics PPT courseware download, eighth grade physics slide courseware download, light phenomenon PPT courseware download, color of object PPT courseware download, .PPT format ;
For more information about the "Color of Light Phenomena Objects" PPT courseware, please click the "Color of Light Phenomena Objects" ppt tag.
"Color of Objects" Light Phenomenon PPT Courseware 3:
"Color of Objects" Light Phenomenon PPT Courseware 3 1. Dispersion 1. The phenomenon that sunlight is decomposed into seven colors of light after passing through a prism is called dispersion of light. 2. White light is a mixture of seven monochromatic lights: red, orange, yellow, green, blue, indigo and violet. Exchange and discussion 1.Light..
"Color of Objects" PPT courseware on light phenomena:
"The Color of Objects" Light Phenomenon PPT Courseware [Experience] Dispersion of Light Activity 1: Prepare water, a container, a plane mirror, and a paper screen. Place the device as shown in the figure. Adjust the mirror angle to refract sunlight onto the white paper screen. Observe the light on the paper screen. color. Activity 2: Put the CD in the sun..