Albedo vs. Earthshine: What's the Difference?

The fraction of incident electromagnetic radiation reflected by a surface, especially of a celestial body.

The sunlight reflected from the earth's surface that illuminates part of the moon not directly lighted by the sun. Also called earthlight.

The spongy white tissue on the inside of the rind of citrus fruit.

(astronomy) Reflected earthlight visible on the Moon's night side.

The fraction of incident light or radiation reflected by a surface or body, commonly expressed as a percentage.

(botany) The whitish inner portion of the rind of citrus fruits that is a source of pectin, commonly referred to as the pith.

(alchemy) One of the four major stages of the magnum opus, involving purification of the prima materia.

Whiteness.

The ratio of reflected to incident light