Fluorescent Orange

Fluorescence

Fluorescence is one of two kinds of photoluminescence, the emission of light by a substance that has absorbed light or other electromagnetic radiation. When exposed to ultraviolet radiation, many substances will glow (fluoresce) with colored visible light. The color of the light emitted depends on the chemical composition of the substance. Fluorescent materials generally cease to glow nearly immediately when the radiation source stops. This distinguishes them from the other type of light emission, phosphorescence. Phosphorescent materials continue to emit light for some time after the radiation stops. This difference in duration is a result of quantum spin effects.

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.

fluorescent

Adjective

1. Of or relating to fluorescence.
2. Exhibiting or produced by fluorescence.

Noun

1. A fluorescent light.

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.