What is the similarity and difference between phosphorescence and fluorescence?
What is the similarity and difference between phosphorescence and fluorescence?
Both fluorescence and phosphorescence are forms of photoluminescence. In a sense, both phenomena cause things to glow in the dark. In both cases, electrons absorb energy and release light when they return to a more stable state. Fluorescence occurs much more quickly than phosphorescence.
What is the main difference between phosphorescence and phosphor persistence?
7 Differences between Fluorescence and Phosphorescence
| Fluorescence | Phosphorescence |
|---|---|
| It is the absorption of energy by atoms or molecules followed by immediate emission of light or electromagnetic radiation | It is the absorption of energy by atoms or molecules followed by delayed emission of electromagnetic radiation |
What is the difference between fluorescence phosphorescence and Raman scattering?
Fluorescence occurs due to real electronic transitions. On the other hand, Raman scattering occurs as a result of virtual electronic-vibrational transitions . More generally, we can say that fluorescence is an absorption or re-emission process and Raman scattering is an inelastic scattering process.
Why is phosphorescence weaker than fluorescence?
As the stored energy can be released only through relatively slow processes, phosphorescence is generally much weaker than fluorescence.
What’s the difference between fluorescence and scattering?
The fundamental difference between light scattering and fluores- cence is that fluorescence occurs from a relatively long-lived (10 8–10 9 s) excited electronic state, whereas light scattering occurs via emission of a photon from a short-lived (< 10 15 s) excited “virtual” state.
How can we differentiate fluorescence and Raman Stoke’s line?
The main difference between Raman scattering and fluorescence is the excited state lifetime. Fluorescence excited states are longer-lived than the ‘virtual’ states associated with Raman scattering. In fluorescence, absorption of light excites an electron to a higher energy state.
