{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is Rubidity?","a":"Rubidity refers to the degree of expression of an object in the visible light range, especially in the red region. It is commonly used to describe the brightness of a color, with objects having a higher redness being more vibrant. In the field of color measurement and color matching, redness is an important parameter that can be measured by instruments such as colorimeters. The range of redness values can vary from 0 (colorless) to 100 (pure red). In daily life, we can compare the redness of different objects to determine their degree of brightness."}]}]}