The Diffraction of Light science fair project abstract shows you what determines the percentage of light that is defracted.
Kentucky, United States of America
The percentage of light reflected from objects to another object, will vary depending on the angle of the light source and how much the light is diffused. People can see high visibility objects without having to hunt for them, saving time, and potentially lives. Light that is diffused has less intensity than a direct source or light that is deflected by retro reflection; rather than specular or diffuse reflection.
To use a standard adjustable power meter to confirm the percent of 632 nm light reflected from various objects.
Using a 632 nanometer wavelength laser, and a standard adjustable power meter, the amount of light reflected, in I-R/mw, is recorded at various angles from the laser, with ten degree increments.
The distance between object and power meter remains at one meter throughout data collection process.
The results of the Diffraction of Light Science Fair Project conformed to standard data, in that white objects, which reflect nearly equal amounts of light across all wavelengths, and objects which were red (630–700 nm) would project more light from the 632 nanometer laser. Other objects reflected a smaller amount of light depending on how many smaller wavelength textures they boasted(red is the largest visible wavelength). The modified plan gave no useful information.