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What is gloss?

Author:Guangzhou Huayuan Scientific Instruments Co., Ltd. Click: Time:2025-10-21 22:30:06

Gloss is the key physical quantity that quantifies a material's surface ability to reflect light, transforming the subjective impression of 'glossy or matte' into measurable data.

The principle is straightforward: when light hits a surface, it undergoes both specular and diffuse reflection. The more concentrated the reflected light, the higher the specular component—and the shinier the surface appears; widespread scattering results in a duller look.

On the production floor, relying on the naked eye to judge 'whether it’s bright enough' is outdated. Even minor adjustments in formulation or processing can alter appearance, undermining brand consistency. A glossmeter compresses 'perception' into Gloss Units (GU)—one measurement, universally accepted.

By controlling gloss, batch variations are minimized, allowing high-end packaging, automotive coatings, and furniture finishes to stand out consistently and steal the spotlight.


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