Color difference is an important parameter for color science quantification. It refers to the distance between different colors in a specific color space. It can be generally understood as the difference in color. It can be measured by a colorimeter and calculated using a specific color difference formula. So, what symbol is used to represent color difference? What are the calculation formulas for color difference? This article introduces them.

D65 light source and TL84 light source are two commonly used color matching light sources in standard light boxes. They are both white light sources in nature , of which D65 light source is a standard white light source, while TL84 light source is a typical warm white light source. So, what is the difference between D65 light source and TL84 light source? The following is an introduction.

For facing stones, glossiness is an important physical property, which reflects the glossiness of facing stones and affects their decorative effects. Therefore, measuring the glossiness of facing stones is an important means to control product appearance quality and enhance product competitiveness. So, how to measure the glossiness of facing stones? How to use a 45° angle gloss meter?

Spraying paint on a car can not only increase the beauty of the car, but also attract the attention of consumers. If there is color difference in the car paint, it will not only affect the consumer\'s choice, but also reduce the competitiveness of the car product and affect the brand\'s reputation. So, what is the matter with the color difference of car paint? How to detect the color difference of car paint?

As an optical instrument, the colorimeter has different measuring angles according to the different angles of light source illumination. The more common ones are 45/0, d/8 and multiple angles. Colorimeters with different measuring angles have different functions and effects. This article introduces the angles and functions of colorimeters.

With the continuous development of urban rail transit and the improvement of people\'s aesthetic level, people have higher and higher requirements for the appearance of urban rail trains, especially the appearance and color of urban rail train doors. This has led to the main engine factory to strictly control the color quality, especially the color difference, during the production process of train door product modeling and appearance. So, how to solve the color difference of urban rail train doors? What is the color difference range?