What is the term fluorescence?

What is the term fluorescence?

: luminescence that is caused by the absorption of radiation at one wavelength followed by nearly immediate reradiation usually at a different wavelength and that ceases almost at once when the incident radiation stops also : the radiation emitted — compare phosphorescence.

What does florescent mean?

flowering
florescence. / (flɔːˈrɛsəns) / noun. the process, state, or period of flowering.

What is fluorescence simple?

Fluorescence, emission of electromagnetic radiation, usually visible light, caused by excitation of atoms in a material, which then reemit almost immediately (within about 10−8 seconds). The initial excitation is usually caused by absorption of energy from incident radiation or particles, such as X-rays or electrons.

What is a non fluorescent?

: not fluorescent: such as. a : not having fluorescence nonfluorescent dyes. b : not capable of fluorescing nonfluorescent minerals.

What is fluorescence give an example?

The emission of light from a material when subject to photons of another wavelength. A fluorescent object often emits visible light when it receives ultraviolet light. Fluorescence also occurs in nature; for example, fireflies and certain deep sea fish have fluorescent qualities.

How do you explain fluorescence?

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore a lower photon energy, than the absorbed radiation.

How old is florescent?

The standard fluorescent lamp was developed for commercial use during the 1930’s. The idea of the fluorescent lamp had been around since the 1880’s however it took steady work over the decades to finally create a working commercially viable model.

What are the long lights called?

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.

What is an example of fluorescence?

Examples of Fluorescence Diamond, rubies, emeralds, calcite, amber, etc. show the same phenomenon when UV rays or X-rays fall on them. One of the best fluorescence examples in nature is bioluminescence.

What is the process of fluorescence?

The energy of the excited state—which cannot be sustained for long— “decays” or decreases, resulting in the emission of light energy. This process is called fluorescence. If the energy absorbed is sufficient the molecule reaches a higher-energy state, called an excited state.

What is fluorescent material?

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. Fluorescent materials cease to glow nearly immediately when the radiation source stops, unlike phosphorescent materials, which continue to emit light for some time after.

How does fluorescence affect diamond?

Fluorescence refers to a diamond’s tendency to emit a soft colored glow when subjected to ultraviolet light (such as a “black light”). Because the fluorescent glow is usually blue (which is the complementary color to yellow) fluorescence can make diamonds of I-M color appear up to one grade whiter.

What does fluoresce mean?

Freebase(0.00 / 0 votes)Rate this definition: Fluorescence. Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation.

What is the past tense of fluoresce?

The past tense of fluoresce is fluoresced. The third-person singular simple present indicative form of fluoresce is fluoresces. The present participle of fluoresce is fluorescing. The past participle of fluoresce is fluoresced.

What is the definition of fluorescent?

Definition of fluorescent 1 : having or relating to fluorescence 2 : bright and glowing as a result of fluorescence fluorescent inks broadly : very bright in color 1 : giving out visible light when exposed to external radiation a fluorescent substance a fluorescent coating