noun
- the proportion of light or other radiation that is reflected by a surface
Usage: technical; physics
Examples
- The reflectance of fresh snow is about 90 percent.
- Scientists measured the reflectance of different paint colors.
- High reflectance materials help keep buildings cool.
- The mirror’s reflectance decreased over time due to tarnishing.
- Reflectance values are important in solar panel design.
- The study compared the reflectance of various metal surfaces.