1. Simple scientific production
For the pencil lead heater, put a few drops of melted wax on a pencil lead. After the wax cools, heat the two ends of the pencil lead. Connected to one (or two) battery.
After a while, you will see that the wax on the pencil lead has melted again. This shows that when electric current passes through the core of the pencil, it is converted into heat energy and melts the wax.
Generally speaking, after current passes through a conductor, the conductor will generate heat. We call this phenomenon the heating effect of current. The greater the resistance of the conductor, the greater the heating effect.
For example, commonly used copper and aluminum wires have very low resistance and generate very little heat after being energized. The furnace wire of the electric furnace is different. It is a resistance wire with a large resistance value, so it can generate a lot of heat after being energized.
If the pencil core is connected to a stable and continuous low-voltage power supply, the pencil core can be heated for a long time. Putting it in the fish tank can heat the water and keep the water at a certain temperature, so the fish can spend the winter comfortably.
2. The popular science painting pictures are simple and beautiful
Basic introduction
The simple explanation of science fiction is fantasy based on science. There are many different opinions on the definition of science fiction, and the scales vary greatly. The broadest one is that as long as the story contains surreal elements, it can be regarded as a science fiction work. Orthodox science fiction fans hold a stricter standard, advocating that at least one science fiction element should be included - science and fantasy are indispensable. If there is no scientific basis, it can only be classified as a fantasy, magic or surreal work; on the contrary, if there is no fantasy, it is just a scientific realistic story. Nabukov, the famous Russian novelist, has an intriguing saying: "Science cannot be separated from fantasy, and art cannot be separated from reality." This may be the best portrayal of science fiction art.
Science fiction painting is a form of painting that is based on scientific fantasy and has a certain scientific basis. It is expressed on the screen through painting. Specifically speaking, they are paintings that are produced by using scientific imagination and using the language of painting to creatively express our reverie about the universe, future human social life, social development, and science and technology based on our understanding of scientific knowledge. Science fiction painting is an art form that truly reflects children's pursuit of a better life. Children's science fiction paintings are paintings produced by children through scientific imagination and the use of painting language to creatively express their reverie about the universe, future human life, social development, science and technology based on the knowledge and experience they have mastered. Children's science fiction painting is an art form that truly reflects children's innocence. It is the most direct, simple and profound reflection of children’s future-oriented feelings about the world around them.
Related differences
Science fiction paintings are different from children's paintings. The children's paintings we usually talk about are often based on age. All paintings by underage children are collectively called children's paintings. Children's paintings are paintings drawn by children's observations, experiences, and memories in real life.
There are also children's bold fantasies. There are often beautiful mythological stories in these paintings to express their yearning for a better life. For example, children's paintings such as "Go to the moon to find Sister Chang'e" are just legends, not science fiction paintings. Another example is that children often draw the crescent moon on the face of a little sister, and the sun as an old man. These are only fairy tales, not science fiction.
Science fiction paintings are not fantasy in the general sense. They are fantasy works that are rich in the concepts of the times and have certain forward-looking, scientific and technical content. They must be based on scientific knowledge and scientific laws to create fantasy. "Today's fantasy will become tomorrow's reality." As for how many days and years it will take to realize this fantasy, it may be very long or very short...
Science fiction painting is different from popular science painting
"Popular science painting" uses the form of painting to express some scientific knowledge in an easy-to-understand manner, with pictures and texts, to popularize and promote scientific knowledge in a visual way. Therefore, general science painting is more realistic, while science fiction painting is more realistic. Ask for freehand brushwork. The function of science fiction paintings is limited to popular science propaganda, but strives to be full of exploration spirit and imagination to create new things and build new lives and new worlds.
Positive meaning
Science fiction painting is a good way to guide students to contact, explore and love science. It is also a good way to cultivate the imaginative thinking ability of young students. Children's science fiction Painting reflects children's imagination and outlook on scientific development, and establishes a love for science and the Chinese nation. At the same time, it is of great significance to cultivate children's scientific imagination, innovative consciousness and inquiry learning ability.
How to draw well
It is not difficult to draw science fiction paintings well. Pay attention to reading more science fiction books, participate in more scientific lectures and technological innovation activities, and combine science fiction paintings with inventions, scientific papers, process design and other technologies. You should also pay attention to observing and collecting new things and new information around you, and you can pay some attention to astronomy, geology, oceans, environment, bioengineering, information engineering, nanotechnology, and genetic engineering. Further imagine, conceive and create the knowledge and information you already know. In addition, students can use their brains and hands to turn some of the "uncomfortable", "unreasonable", "uncomfortable" and "inconvenient" little things they encounter in their daily study and life into "smooth" and "reasonable" "Comfortable" and "convenient" new things can also be expressed through painting techniques. As long as there is an organic combination of bold and rich scientific imagination and unique painting forms, it is a good work.
Judging criteria
The judging criteria can be summarized into two qualities: artistic and scientific quality
The judging criteria can be summarized into two qualities: good content and good form< /p>
You should collect and master relevant aerospace and environmental protection information. Before drawing science fiction paintings, you should broaden your horizons so that you can draw something meaningful and whimsical. You can also give some tips: For example, because there are too many people on the earth, build a house on the seabed and draw a "Undersea Home". Another example is to display pictures and video materials, or to search for information about aerospace and environmental protection before class. When you have relevant materials, you can propose good solutions to the problems in life, express your meaning through sketches, and finally create through imagination until completion.
Provide appropriate guidance on techniques. For example, the painting is larger, the composition is full, the image is vivid, the lines are smooth, the color is smooth, etc. It can be carried out in three steps: imagination, sketching, and drawing. You can use the good work of your peers to guide you, or you can learn from the works of painters. There are many ways.
3. Technical knowledge
1. Why do stars twinkle? We see stars twinkling, not because of changes in the luminosity of the stars themselves, but because of the obstruction of the atmosphere.
The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent; its transparency varies depending on density.
So when we look at the stars through it on the ground, we will see that the stars seem to be twinkling. 2. Why do people yawn? When we feel tired, our bodies have produced a lot of carbon dioxide.
When there is too much carbon dioxide, oxygen must be added to balance the needs of the body. Because these residual carbon dioxide will affect the functional activities of our body, the body will issue a protective response and yawn.
Yawning is a deep breathing action, which allows us to take in more oxygen and expel carbon dioxide than usual, and also eliminates fatigue. 3. Why can snakes walk without legs? Snakes have many scales on their bodies, which are their outermost layer of armor.
The scales are not only used to protect the body, but also serve as their "feet". When a snake crawls forward, its body forms an S shape.
Each scale on the outside of the S-shape will tilt up to help the snake grasp uneven roads as it moves forward. These scales cooperate with the snake's muscles and can push the body forward, so the snake can move without legs! 4. Why do sunflowers always bloom toward the sun? The stems under the sunflower discs contain a substance called "auxin."
This substance has the function of accelerating reproduction, but it is optically repulsive. Whenever it encounters light, it will run to the backlight side. Therefore, when the sun rises, the sunflower stems immediately hide to the backlight side, and it seems that the entire plant is bent toward the direction of the sun.
5. Why does hair turn gray as people age? There is a substance called "melanin" in our hair. The more melanin, the darker the color of the hair. If there is less melanin, the hair will turn yellow or white.
When humans reach old age, various functions of the body will gradually decline, and the formation of pigment will become less and less, so the hair will gradually turn white! 6. Why do fireflies glow? Fireflies emit light because they have luminescent devices at the end of their abdomens. The luminescent devices are filled with many phosphorus-containing luminescent substances and luminescent enzymes, allowing fireflies to emit flashes of light. The purpose of fireflies' light is not only for lighting, but also for courtship, warning, and trapping.
This is also a tool for them to communicate. Different types of fireflies have different lighting methods, lighting frequencies and colors, and they use this to convey different messages. 7. Why does your stomach growl when you are hungry? Your stomach will growl when you are hungry. This is because the food you have eaten is almost finished digesting. Although your stomach is empty, gastric juice will continue to be secreted.
At this time, the contraction of the stomach will gradually expand, and the liquid and gas inside will stir up, causing a gurgling sound. Don’t be embarrassed by your stomach growling next time! Because this is a normal physiological action.
8. Why can’t ostriches fly? They are a type of giant ostrich bird, but they cannot fly into the sky! This is not because their wings don't work, but because their feathers are too soft and their wings are too small, not suitable for flying at all. In addition, the muscles of the ostrich are underdeveloped and the sternum is flat, which is not helpful for flying.
Ostriches live in Africa. Since they have lived in desert areas for a long time, their bodies have gradually evolved into what they are today in order to adapt to the environment. 9. Why does food in cans not go bad easily? Luncheon meat, dace with black bean sauce, and beans in tomato sauce.
These are delicious canned foods that can be stored for a long time without spoiling easily.
This is because the can is sealed and bacteria cannot enter. When people make canned food, they take all the air out of the can and then seal it.
In the absence of air, even if the food inside is contaminated with a few bacteria, they cannot survive or reproduce! 10. Why do babies cry non-stop when they are born? Babies cry loudly when they are born. This is not because they are unhappy, but because they are taking their first breath of air! When a baby is born out of its mother's body, the first breath of air they inhale rushes to the throat, which violently impacts the vocal cords, causing them to vibrate and make a cry-like sound. 11. Why does a lizard still keep bouncing after its tail is broken off? In order to protect themselves, many lizards also use protective colors to hide their appearance. When some lizards are attacked, their tails will break off due to violent muscle contraction.
Because some of the nerves in the broken tail are still alive, it will continue to bounce, thus distracting the enemy so that they can escape. Don't think that their lives will end like this. In fact, it only takes a few months for their tails to grow back and continue their lives.
12. Why do squirrels have such big tails? Don't look at the squirrel's tail! While the squirrel is jumping up and down the tree, its tail is doing a great job. It allows the squirrel to balance when jumping in the tree and avoid falling and being injured.
In addition, this big tail can also play a protective role in winter, tightly surrounding the squirrel's body, which is both convenient and practical. 13. Why can’t human thumbs have one or three joints? The average person has five fingers, and the lengths of the fingers vary.
However, has anyone noticed that in addition to the thumb, other fingers also have three joints, but the thumb only has two joints? It turns out that its number of segments matches the other four fingers. If it has three joints, the thumb will be weak and cannot lift heavier objects; if it has only one joint, it will not be able to cooperate with the other four fingers to grasp things freely! 14. Why don’t I feel itchy when I scratch myself? When others scratch ourselves, we feel itchy and laugh constantly; however, when we scratch ourselves, we not only don’t laugh, but also don’t feel itchy.
Based on our mental preparation, the brain will send a message that "there is no danger", and the nerves will relax accordingly, so we will not laugh or feel itchy! 15. Why is the sea water mostly blue or green? Looking at the sea, we often find that the water is blue or green. However, when you pick up the sea water, you can only see that it is as transparent and colorless as the water in the past.
It turns out that the sea water itself and us.
4.50 Science Tips
Why do sunflowers always face the sun? The stems of sunflowers contain a wonderful auxin.
This auxin is very photophobic. When exposed to light, it will go to the backlight side, and at the same time it will cause the cells on the backlight side to multiply rapidly. Therefore, the backlight side will grow faster than the light side, causing the sunflower to develop a phototropic bend. .
2. Why do stars twinkle? We see stars twinkling, not because of changes in the luminosity of the stars themselves, but because of the obstruction of the atmosphere. The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere.
The atmosphere is not absolutely transparent. Its transparency will change depending on the density. So when we look at the stars through it on the ground, we will see that the stars seem to be twinkling.
3. Why do people yawn? When we feel tired, our bodies have produced a lot of carbon dioxide. When there is too much carbon dioxide, oxygen must be added to balance what the body needs.
Because these residual carbon dioxide will affect the functional activities of our body, the body will issue a protective response and yawn. Yawning is a deep breathing action, which allows us to take in more oxygen and expel carbon dioxide than usual, and also eliminates fatigue.
4. How high is the blue sky? The "blue sky" is actually the Earth's atmosphere. The atmosphere surrounds the earth's air and is divided into 5 layers according to the density of the air. The total thickness is 2000-3000 kilometers.
But most of the air is concentrated from the ground to places below 15 kilometers high, and the air becomes thinner the higher you go. How thick the atmosphere is, how high the blue sky should be.
5. Why are there no stars during the day? Because part of the sunlight is scattered by gas and dust in the atmosphere during the day, the sky is illuminated very brightly. In addition, the light radiated by the sun is very strong, making it impossible for us to see the stars. 6. What celestial bodies are there in the solar system? There are nine planets in the solar system.
They are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. In addition, there are many asteroids, comets and meteors in the solar system, and there are 2,958 officially numbered asteroids.
The most famous comet is Halley's Comet. 7. Why does thunder occur? This is a natural phenomenon that occurs when negative and positive electricity meet together.
When it rains, some of the clouds in the sky are charged with positive electricity and some with negative electricity. When the two types of clouds come together, they will discharge, emitting very bright lightning, and at the same time, they will emit very bright lightning. The heat causes the surrounding air to quickly heat up, expand, and make a loud sound, which is thunder. 8. Why can airplanes fly into the sky? The plane has two wings, like a bird's wings, and it also has propellers.
The wings can generate lift to lift the aircraft in the air; the thrusters can generate power and push the aircraft forward. Therefore, airplanes can fly into the sky like birds.
33. When the quartz clock hung on the wall stops moving because the battery is exhausted, its second hand often stops at the "9" position on the dial. This is because the second hand is most hindered by the gravity moment at the "9" position.
9. Boiling water does not make noise, water does not make noise. Before water boils, due to convection, the bubbles in the water rise while vibrating up and down. Most of the bubbles burst under the pressure in the water, and their bursting and vibration sounds are louder. It resonates with the container, so the sound is very loud. After the water boils, the upper and lower parts are isothermal, and the bubble volume increases. Under the action of buoyancy, it rises to the water surface before bursting, so the sound is relatively small.
10. To burn incompatible substances, water and fire must reach the ignition point. Due to the large specific heat of water, the contact between water and fire can absorb a large amount of heat, so that the temperature of the ignited substance is reduced; at the same time, the vaporized water vapor surrounds the ignited substance. Outside the burning object, it is impossible for the object to come into contact with air, and without air, combustion cannot proceed. 11. Travel 80,000 miles a day while sitting on the ground. Since the radius of the earth is 6,370 kilometers, every time the earth rotates once, the distance "walked" by objects on the surface is about 40,003.6 kilometers, or about 80,000 miles.
This is a poem recited by ***. It also scientifically reveals the relationship between movement and stillness - movement is absolute, and stillness is always relative to a reference object. 12. A small weight weighs a thousand pounds. According to the principle of lever balance, if the power arm is a fraction of the resistance arm, the power is several times the resistance.
If the force arm of the weight is very large, then "one or two strokes of a thousand catties" is entirely possible. 13. A broken mirror cannot be re-rounded. When the distance between molecules is large (greater than a few hundred angstroms), the gravitational force between molecules is very small, almost zero, so it is difficult to re-round a broken mirror.
14. If people are united, Taishan will move. If the directions of each component force are the same, the resultant force is equal to the sum of the magnitudes of each component force. 15. Lifting tofu with hemp rope - it cannot be lifted. When the pressure is constant, if the force-bearing area is small, the pressure will be large.
16. Real gold is not afraid of fire, and truth is not afraid of controversy. From the perspective of the melting point of gold, although it is not the highest, it is still 1068°C, while the temperature of a general flame is about 800°C. Due to the temperature of the flame Less than the melting point of gold, so gold cannot melt. 17. A loud roar echoes in the mountains and valleys. People roar in the high mountains. The sound can form a loud echo through multiple reflections. It lasts for a long time, as if the mountains are roaring and the valleys are echoing.
18. When you sit in a well and look at the sky, you will see very little. Since light propagates along a straight line, it can be known from the knowledge of geometric drawing that the frog's field of view will be very small. 19. It can be seen from the pressure formula that when the pressure is constant, the smaller the force-bearing area, the greater the pressure.
People will feel extremely uncomfortable sitting on such a felt. 20. Auspicious snow shines on a good year. Since snow is a poor conductor of heat, when it covers crops, it can prevent heat conduction and air convection, so it can play a role in insulation.
21. Cold before frost, cold after snow. On late autumn nights, the air temperature near the ground suddenly becomes cold (the temperature is below 0℃), and the water vapor in the air condenses into small ice crystals, which adhere to Frost forms on the ground, so there is a "cold before frost" feeling. When snow melts, it needs to absorb heat to lower the temperature of the air, so we have the feeling of "cold after snow".
22. An egg hits a rock - an egg hits a rock without realizing it. Although the magnitude of the force is the same, each object can withstand a certain pressure. If it exceeds this limit, the object may be damaged. The egg can withstand less pressure, so the egg will crack.
23. Before jade is polished, its surface is uneven and the light is diffusely reflected. After the jade is polished, its surface is smooth and the light is specularly reflected. 24. Fans have a cool breeze and are suitable for fanning in summer but not in winter or summer.
5. Science fiction paintings about science
Science fiction paintings are a good way to guide students to contact, explore and love science. They are also a good way to cultivate the imaginative thinking ability of young students. Path, children's science fantasy paintings reflect children's imagination and prospects for scientific development, and establish a love for science and the Chinese nation.
At the same time, it is of great significance to cultivate children's scientific imagination, innovative consciousness and inquiry learning ability. 1. First of all, based on life, the performance content is in line with the reality of life and has authenticity. Technology comes from life. 2. The theme has a certain scientific basis and can apply correct scientific principles. There should be no superstitious content or idealistic content. You The idea is to accurately grasp scientific principles that may be realized in the future through the development of technology and science. 3. Teachers are forward-looking based on the knowledge they have learned. It may not necessarily be the science and technology we know currently, but it may be in the future. Possible directions of development: Allowing for bold imagination about future scientific development requires teachers to continuously learn and absorb new knowledge about the development direction of future science and technology, learn knowledge from multiple channels, and understand various fields of social sciences. Learning methods-the Internet, books and newspapers , magazines "We Love Science", "Little Edison", etc.
4. How do teachers guide students? How to accurately and appropriately use scientific principles to express their own ideas is a difficult point: students have insufficient knowledge, narrow knowledge, and lack of understanding of scientific principles. Teachers should be good knowledge consultants. The scientific principles used by the assistants are close to the students' current knowledge. Don't pursue the accuracy and rigor of knowledge too much. Creativity and techniques must be suitable for teenagers at all stages to meet their knowledge level and the level of technology they have mastered. ..
6. A small technological production
Come on, let us teach you something useful.
The simplest: make a pen holder! ! Do you have any unused glass cups at home? Or drop a tea cup or something, try it, anything heavy enough to hold the pen will do. Find a nice piece of cloth or colored paper and make a dress for the cup.
Kraft paper is also very good. Wrap it around the cup, measure it, and cut out a suitable piece. Leave about an extra centimeter at the joint. Find some glue, paste, and all-purpose glue, and stick the coat on the cup.
Chewed gum will also work. The chewing gum should be pulled smaller. The important thing is to stick the edges and joints tightly. That's it. Just trim the uneven areas, stick a random decoration on it, write a few words with a colored pen, and you're done.
No decorations? Find a picture magazine and cut out something beautiful, like a small ribbon falling off the clothes, or draw it directly. Okay, that's enough for you.
If you are really interested in handmade products or need anything else, just leave me a message.
7. Art tips
Art usually refers to painting, sculpture, arts and crafts, architectural art, etc., a kind of art that is carried out in space, expresses opinions, and appeals to people's vision.
When Europe began to use this name in the seventeenth century, it generally referred to paintings, sculptures, literature, music, etc. with aesthetic significance. When I began to use this term commonly around the time of the May 4th Movement, it also had a connotation equivalent to the entire art.
For example, when Lu Xun explained the word "art" in 1913, he wrote: "Art is the word...translated from the English word Aite. The word "Aite" originally came from Greece, and its friendship is art. .
Soon after, our country used the word "art", which was translated as "爱特", and the word "art" became a name specifically referring to the creation of visual arts such as painting. Techniques and means of artistic image.
For example, painting relies on color, light and shade, lines, anatomy and perspective; sculpture relies on volume and structure. These techniques and means are formed through long-term artistic practice. The plastic arts each have their own special artistic language, which determines the different expression rules of these arts, which is related to the success or failure of the artistic image and the appeal of the artistic works.
The artist's means of plastic expression. Continuous exploration of the regularity and excellence are necessary conditions for artistic creation to express new life content and satisfy people's evolving aesthetic preferences. The golden section is also called the golden rule and the golden ratio. On a line segment, divide the line segment into a long segment and a short segment according to the optimal length and short ratio, or form the best ratio of the long side to the short side of a rectangle according to the optimal ratio of the long and short line segments, which constitutes the golden section 2. A term for spatial painting.
Refers to the plane space composed of two factors: length (left and right) and height (up and down). In order to truly reproduce objects, perspective, light and shade and other modeling methods are often used in painting. The plane of the two-dimensional space creates a sense of depth and a three-dimensional effect of the object, that is, using the two-dimensional space to create the illusion of a three-dimensional space like that of natural objects.
Some paintings, such as decorative paintings, pattern paintings, etc. , does not require a strong depth effect, but intentionally pursues a flat meaning in the two-dimensional space to obtain artistic expression.
Refers to the length (left and right), height ( A three-dimensional space composed of three factors: up and down) and depth (depth). In painting, in order to truly reproduce the object, the three-dimensional and depth effects of the three-dimensional space must be expressed on the plane.
Texture painting and sculpture. Plastic arts and other plastic arts use different expression techniques to express the characteristics of various objects in their works, such as the weight, softness, hardness, roughness and other different qualitative characteristics of silk, skin, water, stone and other objects, giving them People with a sense of authenticity and beauty.
The sense of volume expresses the weight, thickness, size, and amount of an object with the help of modeling factors such as light and shade, color, and lines.
Such as the dignity of mountains and rocks, the lightness of wind and smoke, etc. Real objects in paintings are required to convey the unique weight and sense of reality of the object.
Using the contrast relationship of quantity can produce diverse and unified effects. Sense of space In painting, according to the principles of geometric perspective and aerial perspective, the relationship between distance, level, interspersion, etc. between objects is depicted, so that it can convey a deep and three-dimensional sense of space in a flat painting.
Volume painting terminology. It means that the visible objects represented on the painting plane can give people a three-dimensional feeling occupying a three-dimensional space.
In painting, any visible object is determined by the structure of the object itself and is composed of blocks with different directions and angles. Therefore, grasping the structural characteristics of the painted objects and analyzing their physical relationships in painting are necessary steps to achieve a sense of volume.
Perspective is a theoretical term for painting. The word "perspective" originates from the Latin "perspclre" (see through).
The initial study of perspective was to look at the scene through a transparent plane, and accurately depict the scene on this plane to form a perspective view of the scene. Later, the science of using lines to show the spatial position, outline and projection of objects on a flat frame according to certain principles was called perspective.
Light and shade are painting terms. It refers to the changes in lightness and darkness of the light-received, backlighted and reflective parts of the object in the painting and the method of expressing this change.
When an object is illuminated by light, it appears in three states of light and dark, which are called three major sides, namely: bright side, middle side, and dark side. The three major surfaces of light, color and light are generally the middle surface and the dark surface.
The three major surfaces of light, color, light and shade generally appear as five basic levels, that is, five tones: ① The bright surface always receives the light; ② The gray surface and the middle surface, half-light and half-dark; ③ The junction between light and single rooms Line - the turning point between the bright part and the dark part; ④ Dark side - the backlight part; ⑤ Reflection - the dark and translucent part of the single surface that is affected by the surrounding reflection. Describing objects according to the levels of light and dark has always been the basic method of Sifang's paintings.
During the Renaissance, Vasari discussed in his "Biographies of Artists": "When painting, after drawing the outline, add shading to roughly separate the light and dark, and then carefully make the light and dark in the single room. "Rembrandt is a master of light and shade techniques among European painters.
Contour A term for plastic arts. Refers to the edge line that defines the range of the object's shape.
In painting and sculpture, the correctness of the outline is considered crucial to the success of the work. Composition A term for plastic arts.
Refers to the structural configuration method of artistic images in works. It is an important means for plastic arts to express the ideological content of works and obtain artistic appeal.
Color is one of the important factors in painting. It is a complex phenomenon manifested by various objects absorbing and reflecting light to varying degrees, acting on people in the auditorium.
Due to the different textures of objects and the different degrees of absorption and reflection of various colored lights, everything in the world forms ever-changing colors. Hue The qualitative appearance that color can present.
The different hues in nature are infinitely rich, such as purple-red, silver-gray, orange-yellow, etc. Chroma refers to the inherent lightness of the color itself.
Among the seven basic hues, violet is the darkest and yellow is the brightest. Hue is also called tone.
Under the illumination of a certain hue and brightness of the light source color, the surface of the object is enveloped in a unified color tendency and color atmosphere. This unified atmosphere is the hue. Color sex The property of color.
Colors are basically divided into two categories: warm colors (also called hot colors) and cool colors (also called cold colors). Red, orange, and yellow are warm colors, giving people a warm, warm, and outgoing feeling.