albedo
Reflectance refers to the amount of light that is reflected off a surface, while reflectivity is a measure of how efficiently a surface reflects light. Reflectance is a property of the surface, while reflectivity is a physical property of the material. In the context of light and surface interactions, reflectance and reflectivity are related in that they both describe how much light is reflected off a surface, but reflectivity specifically quantifies the efficiency of that reflection.
Albedo
it is called albedo
The higher the reflectivity of an object, the more intense and defined its highlights will appear. Objects with low reflectivity will have softer and less pronounced highlights. Reflectivity influences how light interacts with the surface of an object, affecting the appearance of highlights.
A mirror is a surface that reflects radiation, including visible light. It has a high level of reflectivity due to its smooth surface.
The property that reflects light is called reflectivity. This is the measure of how well a surface reflects light and is often described in terms of its reflectance or albedo. Smooth, shiny surfaces tend to have high reflectivity, while rough or dark surfaces have low reflectivity.
The word you're probably looking for is albedo.
Charcoal has the lowest albedo. Albedo is the reflectivity of light from a surface.
reflectivity is the fraction of incident radiation reflected by a surface. In general it must be treated as a directional property that is a function of the reflected direction, the incident direction, and the incident wavelength. However it is also commonly averaged over the reflected hemisphere to give the hemispherical spectral reflectivity:reflectance a measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux.
Beryllium is a metal that has a high reflectivity for visible light. When light strikes the surface of beryllium, it reflects off the metal's smooth surface, giving it a shiny appearance. This high reflectivity makes beryllium useful in applications where a highly reflective surface is desired, such as in optical systems or mirrors.
The fraction of total radiation reflected by a surface is known as its albedo. It is expressed as a value between 0 and 1, with higher values indicating greater reflectivity and lower values indicating lower reflectivity.
The property of matter that allows it to reflect light is called reflectivity. Reflectivity refers to how well a material reflects light and is determined by the material's surface texture and composition. Materials with smooth and shiny surfaces, like metals and glass, tend to have high reflectivity.