Reflection
It is called a decimal fraction.
It is called an equivalent fraction.
It is called "writing a fraction as an equivalent fraction with a larger denominator"!
A unit fraction.
It is called a [decimal] fraction.
There is no special name. The fraction of sunlight which is reflected will be different from the fraction of other light. The reflectivity of a surface varies with the wavelength of the incident light.
albedo
It is the reflectivity of the surface. However, it is important to note that the reflected fraction depends on the wavelength of the incident light.
There is no particular term. This is because the reflectivity of a surface varies across the electromagnetic spectrum so a surface which reflects a large proportion of blue wavelengths in sunlight may or may not reflect a similar proportion of red wavelengths.
this question needs to be stated more precisely. The solar fraction is a measurement of usage of the solar thermal energy by the solar thermal system installed.
The interaction of light beams with a surface is called regular reflection when the light beams reflect off all points of the surface at the same angle. When the light beams hit the surface and reflect off in different angles it is called diffuse reflection.
The solar radiation that reaches the earths surface from the sun is called INSOLATION
Omnidirectional Radiation. OR Scattering
The interaction of light beams with a surface is called regular reflection when the light beams reflect off all points of the surface at the same angle. When the light beams hit the surface and reflect off in different angles it is called diffuse reflection.
study island answer: radiation
All materials will reflect, absorb and transmit (allow to pass through) electromagnetic radiation. This is called the Transmit/Reflect (T/R) ratio and it will vary for a material based on the wavelength of the incident radiation. IR radiation does not transmit through most materials. It is absorbed/reflected. Metalized Mylar has a small transmit/reflect ratio.
That surface would be called a "mirror".