Orange Albedo

Orange (fruit)

The orange, also called sweet orange to distinguish it from the bitter orange, is the fruit of a tree in the family Rutaceae. Botanically, this is the hybrid Citrus × sinensis, between the pomelo and the mandarin orange. The chloroplast genome, and therefore the maternal line, is that of pomelo. Hybrids of the sweet orange form later types of mandarin and the grapefruit. The sweet orange has had its full genome sequenced.

Albedo

Albedo is the fraction of sunlight that is diffusely reflected by a body. It is measured on a scale from 0 to 1. Surface albedo is defined as the ratio of radiosity Je to the irradiance Ee received by a surface. The proportion reflected is not only determined by properties of the surface itself, but also by the spectral and angular distribution of solar radiation reaching the Earth's surface. These factors vary with atmospheric composition, geographic location, and time.

Orange (colour)

Orange is the colour between yellow and red on the spectrum of visible light. The human eyes perceive orange when observing light with a dominant wavelength between roughly 585 and 620 nanometres. In traditional colour theory, it is a secondary colour of pigments, produced by mixing yellow and red. In the RGB colour model, it is a tertiary colour. It is named after the fruit of the same name.

orange

Noun

1. An evergreen tree of the genus Citrus such as Citrus sinensis which yields oranges (the fruit).
2. Any round citrus fruit with a yellow-red colour when ripe and a sour-sweet taste; the fruit of the orange tree.

Adjective

1. Having the colour of the fruit of an orange tree; yellowred; reddish-yellow.

albedo

Noun

1. The fraction of incident light or radiation reflected by a surface or body, commonly expressed as a percentage.
2. The whitish inner portion of the rind of citrus fruits that is a source of pectin, commonly referred to as the pith.