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albedo
This term is primarily used in planetary science, meteorology, and astrophysics to quantify the reflectivity of a celestial body or a terrestrial surface. It describes a ratio rather than a physical substance, evoking an image of a mirror-like quality where a value of 1.0 represents a perfect reflector and 0.0 represents a perfect absorber.
Because it is a technical measurement of a property, the word is treated as an uncountable noun in most scientific contexts. It does not refer to a discrete object that can be counted, but rather to a characteristic value of a material or surface.
Meanings
Examples
The planetary albedo helps scientists determine the surface composition of distant moons.
Ice caps have a high albedo which keeps the polar regions cooler.
Wait, does the dark ocean have a lower albedo than the sandy beach?
As the glaciers melt, the albedo of the region decreases, leading to more heat absorption.
The satellite measured the albedo of the asteroid to estimate its mineral content.
I wonder if changing the citys albedo by painting roofs white could lower urban temperatures.
The albedo of Venus is remarkably high due to its thick cloud cover.
We need to calculate the bond albedo to understand the energy balance of the atmosphere.