When we speak of brightness, we refer to this particularity as the visual effect that the surface of an object has when the projected light is reflected in a specific way.
The brightness has to do with the amount of reflected direct light that an object returns, and the more quantity of this, the perception of brightness for the human eye is greater.
If we compare the different surfaces that objects can have, those with a smoother, smoother outer layer will reflect much sharper than those with rougher surfaces. In this way, the smooth and polished surfaces reflect the light as if they were a mirror, and therefore the effect of brightness is high. This occurs because the incident light is reflected directly and compactly in one direction, and the angle of incidence is equal to that of reflection.
On the other hand, when we project a ray of light on a rough surface, it scatters out in all directions. In this way, the quality and sharpness of the projected image decrease and appear diffusely. In this type of surfaces, a reflected object no longer appears bright but blurred. The ray of light divides and follows a principal direction, giving the object a matt appearance.
How to measure the brightness with a glossometer
The gloss meters or gloss meters are a range of instruments used for measuring a specular reflection of a body or surface.
Specular reflection had a direct relationship between the proportion of incident light and reflected light, and this has been used as a principle for the standardization and measurement of brightness values.
At present, different international standards define the methodology and technical specifications of glucometers for the measurement of brightness in different types of materials and surfaces. Your meters work in the most precise way according to the guidelines and standards of the reference institutions for the sector, as is the case of the ISO, ASTM, DIN, BS or JIS standards.
Gloss meters or brillometers are a range of instruments that are used to measure the specular reflection of a body or surface.
Specular reflection had a direct relationship between the proportion of incident light and reflected light, and this has been used as a principle for the standardization and measurement of brightness values.
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