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What is Ultraviolet Light?

2023-01-13 13:40:43

Let's go back to elementary school science. This is the visible spectrum - the light we can see with our naked eyes - but a small part of the electromagnetic spectrum. This is the electromagnetic spectrum. It starts with gamma rays on the far left and travels to the right via X-rays, microwaves and ...
What is GLOSS?

2022-11-10 08:59:56

Glossiness is a physical quantity that evaluates the ability of a material's surface to reflect light. As a surface characteristic of an object, gloss depends on the specular reflection ability of the surface to light. Specular reflection refers to the reflection phenomenon that the Angle of ...
Why visual evaluation is not enough to evaluate color accuracy?

2022-10-20 13:14:12

It takes three things to see color—our eyes, light, and objects—and all three are variable. Changes in the human eye: Genetics, color memory, eye fatigue, color blindness, and medications are just some of the variables that affect our ability to distinguish between color differences. Plus, we've all ...
What is haze and Total transmittance

2022-09-05 17:24:53

Haze, English name haze, is the percentage of the transmitted light intensity deviating from the incident angle by more than 2.5 degrees to the total transmitted light intensity. The greater the haze, the lower the gloss and transparency of the film, especially the imaging degree. It is an important ...
What is CIE-LAB and CIE-L *C*H.

2022-07-25 18:13:59

L * a * b *, also known as CIE-lab, is one of the most common uniform color spaces for measuring object color which proposed by CIE in 1976. It is a color space established to overcome that the equal distance on the YXY color space diagram is not the same color difference we observed. In this color ...
What is XYZ

2022-06-23 18:17:59

Modern theory of color vision holds that there are three kinds of color sensitive pyramidal cells on the human retina, which are sensitive to red, green and blue colors respectively. The process of color vision can be divided into two stages. In the first stage, the three kinds of pyramidal cells on ...
How to measure gloss

2020-06-12 08:58:47

Gloss is the surface characteristics of an object, which depends on the specular reflection ability of the surface of the object to light. Specular reflection refers to the reflection phenomenon where the angle of reflection is equal to the angle of incidence. The greater the value of Gloss, the ...
Haze Meter Upgrade

2020-03-16 09:15:48

Haze Meter Upgrade Haze meter is suitable for the color, haze, spectral transmittance and all-transmittance measurement of transparent and translucent materials such as plastic, film, glass, LCD panel and touch screen. It is a very essential instrument for samples’ haze, transmittance color and ...
Opacity and Color Strength Measurement by Color Spectrophotometer

2020-06-10 08:59:03

Portable color spectrophotometers made by CHNSpec Tech can measure both opacity and strength on instrument. We will introduce these two parameter now. Part 1. Opacity Introduction Opacity is a measure for hiding power: Opacity% = Y (black background) / Y (white background) * 100% The measurement of ...
Why do CHNSpec Haze Meter Meet ASTM D1003 and ISO 13468/14782 Standard?

2020-04-16 11:25:00

What is ASTM D1003 requirement on haze meter structure? The following picture is the ASTM D1003 requirement on haze meter structure: ASTM Requirement on Haze Meter 1). The opening area in the integrating sphere does not exceed 4% of the total internal surface area of the integrating sphere; 2). The ...

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