Let me talk about it here today. Illumination is a university question. For thousands of years, countless artists have been pursuing light on canvas.
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When it comes to lighting selection, since most people don't put too many colorful lights at home, I understand that the main question here is actually the color temperature. The color separation and wattage used in daily life, the wattage is the light intensity, and the color temperature is the scale of the light source color, and the unit is K (Kelvin).
The image below illustrates the color temperature classification well. 
The design of the light bulb has not changed much in the past 100 years. Every year, consumers buy a lot of ordinary light bulbs. Because ordinary light bulbs are warmer than fluorescent lights, the warmth of the first type in the above picture is the favorite home of most people in the world. light source.
But there are exceptions – the sale of warm-colored bulbs is often lower than in cold light sources in tropical countries. For example, indoor homes in Hong Kong use a lot of cold light sources to create a cool interior.
In addition, although the warm light source looks more welcoming, but the comparison chart shows that because the warm light source will create too much red and orange glare, it will weaken the lines and contrast of the home design, such as the above picture, although the left picture is warmer. But the tide is still on the right.
Therefore, color selection is only one part of the indoor lighting scheme. It needs to be combined with climate, lighting, home style and functional space to analyze specific problems, but it also follows some golden criteria of indoor lighting design, such as the two basic criteria. The principle of mixed lighting, the second is the principle of functional lighting.
living room
The first level of the basic light source center chandelier, as the main lighting source, the traditional living room is still more high-temperature warm light source more atmosphere.
The second level is the secondary light source, which can be focused on an object that you want to highlight, such as a spotlight on a hanging picture, a backlight of a big chair, and so on.
This will create a visual focus for your living room, allowing others to ignore other problems that may exist in your living room, such as narrow spaces.
In addition, wall lights, candlesticks, etc. can enhance the layering of light. It is best for these light sources to have similar color temperatures. For example, warm light sources of different intensities should be interchanged with each other, and no cold and warm light sources should be mixed.
The third type of light source is work lighting, which can illuminate the illumination of a specific area, such as a reading light on the sofa side. This cold and warm light has little to do with lighting requirements.
restaurant
The best choice for basic lighting in the dining room is to illuminate the chandeliers in the dining area, and there is also a wall lamp or candlestick that adjusts the atmosphere.
Lighting in the restaurant area should avoid direct lighting. Even the main lighting chandelier should not exceed 100 watts. The atmosphere in this area should be as warm as food, so it needs to be malleable and warm or at least neutral.
kitchen
Due to the outstanding functionality of the kitchen, the intensity of the light source must be guaranteed first. The bright cold light source or neutral light source here can make the kitchen bright and clean.
However, the lighting placed on the workbench can use neutral low-voltage spotlights, which responds well to the rich color development of different foods. It not only brings clear work lighting but also close to daylight, and has been widely used in kitchens.
bedroom
The lighting of the bedroom requires warmth and privacy to achieve the emotional relaxation before going to sleep. Naturally, the warm light source is the best. In particular, low-wattage lamps like candlelight sources are the most suitable. For reading, a small LED spotlight can be added to the bedside.
bathroom
The light source of the bathroom also has functional requirements - responsible for illuminating the vanity mirror, so the choice of sidelights for the vanity mirror is crucial. Sidelights can choose a warm light source to let you enter the toilet at night without interrupting sleepiness because it is too bright. It also allows you to look at your face under a soft light source without being scared by the increasing pores on your face. 
The first principle of indoor lighting is actually the most likely use of natural light, not only to transform your environment, but also about your health. What I want to say today is artificial light, especially the color selection in lighting. There are also multiple levels of illumination source, enhanced light source and background light source. In particular, the side window is cleverly introduced as a new supplementary light source, good design, capricious! However, the cold light source ceiling light of the bathroom is also indispensable. One ceiling light source can also avoid shadows on your face; the second bright light source allows you to clean the dead ends or find debris.
The above is a comparison of warm and cold light.
a secondary enhanced light source that forms a visual focus
Multi-layer warm light source creates a warm effect
Cold light source bright ceiling light + neutral color palette on the worktable is especially suitable for the clean feeling of white kitchen
Reading and warm color bedside backlights are a good combination