A digital refractometer is an instrument used to measure the refractive index of a substance. It works by shining a beam of light through a sample and measuring the angle at which the light is bent. The refractive index is then calculated based on this angle and the properties of the material being measured. Digital refractometers are commonly used in the food and beverage industry to measure the sugar content of liquids such as fruit juices and wine. They are also used in the automotive and chemical industries to measure the concentration of various fluids. Digital refractometers offer the advantage of being more accurate and easier to read than traditional analog refractometers. Digital Refractometer,Auto Digital Refractometer,Auto Portable Refractometer,Portable Automatic Refractometer Lachoi Scientific Instrument (Shaoxing) Co., Ltd. , https://www.lachoinst.com
Furniture is not only aesthetically pleasing, but also comfortable and easy to use. Modern furniture design emphasizes the integration of physical engineering and ergonomics. The core of ergonomics is "people-centered," focusing on everything that serves human needs, from clothing, food, shelter, and travel, to considering other factors while placing humans at the center. Ergonomics has been widely applied in modern industrial product design, and its application in furniture design has become increasingly mature.
Furniture is directly used by people, so the scale, shape, color, and arrangement of furniture must align with the physiological and psychological dimensions of the human body, as well as the movement patterns of different body parts. This ensures safety, practicality, convenience, comfort, and beauty. The application of ergonomics in furniture design focuses on how people react physiologically and psychologically when using furniture, supported by scientific experiments and measurements. These studies provide a solid foundation for furniture design. Additionally, it breaks down daily activities like working, studying, and resting into various postures, helping to standardize furniture dimensions based on reference points such as standing, sitting, and lying positions.
In terms of furniture scale, the height of cabinets, tables without chairs, and podiums are based on the standing position. Furniture used while sitting, such as desks, dining tables, and chairs, follows the sitting position reference. Beds, sofas, and recliners are designed based on the lying position. When designing seat height, the sitting position (ischial tuberosity) is used as the reference point. Seat height is typically set between 390mm and 420mm. If it's lower than 380mm, the knees may bend uncomfortably, making it hard to stand up. If it's higher than 500mm, pressure shifts to the thighs, causing discomfort and swelling in the lower legs. The width, depth, and angle of the seat surface, as well as the curvature of the backrest, all take into account the human body’s proportions and movement patterns.
The design of writing desks, legroom space, and mattress elasticity are all based on human physiological needs. In addition, the choice of materials, decorative patterns, and color schemes in furniture design reflect psychological needs. For example, furniture in elderly rooms tends to be elegant and dignified, with deep colors and rich patterns. Youth room furniture is usually simple, light-colored, and beautifully decorated. Children's room furniture is colorful, playful, and often features rounded shapes. Soft or hard materials, warm or cool colors, and minimalist designs can strongly influence people’s emotions. Therefore, modern furniture design is becoming more personalized, and customized furniture is expected to play a larger role in production and distribution.
Good furniture design reduces labor, saves time, promotes health and happiness, and ultimately benefits from the proper application of ergonomic principles.